MG MGB User Manual

advance

AUTO-WIRE

www.advanceautowire.com

MGB, MGC, MGBV8
WIRING DIAGRAMS

A PUBLICATION

m

p

d

© 2005

May be reproduced for personal, non-commercial use only

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

GENERATOR WARNING LAMP

GENERATOR

D

F

NY

NG

N

N

B F WLD E

REGULATOR

NY

IGNITION

N

SWITCH

N

W

W

W

2

1

3

N

WR

W

W

FUEL PUMP

RADIO

W

OVERDRIVE

ON - OFF SWITCH

W

IGNITION

COIL

CIGAR

LIGHTER

-

+

SOLENOID

W

N

B

Y

WB

DISTRIBUTOR

Y

W1

C2

W2

C1

1 2

3

5

7

WIPER

SWITCH

THROTTLE SWITCH

TRANSMISSION

INTERLOCK SWITCH

4

6

8

YPYRYR

OVERDRIVE

SOLENOID

WIPER MOTOR

1E2

G

+

BATTERIES

HIGH BEAM INDICATOR

B

B

HIGH BEAMS

B

B

LOW BEAMS

COURTESY/MAP

LIGHT/SWITCH

B

B

B

GAUGE & DASH

B

ILLUMINATION LAMPS

-

STARTER

“FLASH-TO-PASS

*

SWITCH”

UW

UW

UW

UR

UR

RW

RW

RW

RW

UW

RG

CIGAR LIGHTER

OIL PRESSURE/WATER TEMPERATURE

TACHOMETER

SPEEDOMETER

FUSE BOX

1 2

3

N

UW

1 2

DIMMER

UR

SWITCH

5

7

R

R

U

F

UR

SWITCH

N

4

6

8

U

LIGHTS

HEADLIGHT

W
W

3

W
W

N
N

N

1 2

N

B

B

R

R

G

G

4

G

P

R

R

R

R

PB

B

HORN

BUTTON

PB

PB

P

HORNS

P

TURN SIGNAL

FLASHER

G

L

B

P

LG/P

*TS SWITCH

LG/N

(LG/N)

(GW)

(GR)

G

HEATER FAN

SWITCH

G

G

GW

GR

GNGN

HEATER FAN

GB

FUEL GAUGE & SENDER

GW

GW

G

G

RH FRONT

RH REAR

B

B

B

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A PUBLICATION 5 © 200

FRONT PARKING

B

B

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May be reproduced for personal, non-commercial use only

RW

RW

GR

G

LG/P

B

B

R

R

TAIL LIGHTS &

R

R

R

R

R

R

LG/P

LG/U

green

LG/Y

green

RH TS

INDICATOR

LH TS

INDICATOR

G

GP

BRAKE SWITCH

GR

G

GP

LH REAR

LH FRONT

GP

GP

LICENSE PLATE LAMPS

GAUGE

R

LAMP

DIMMER

CONTROL

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange

*These two switches are combined in one housing

advance

AUTO-WIRE

FUEL LEVEL

B

RW

DIAGRAM 1 - 62/64 MGB

FROM BENTLEY A8753AW

sheet 1

-

+

BATTERIES

HIGH BEAM INDICATOR

B

B

HIGH BEAMS

B

B

LOW BEAMS

COURTESY/MAP

LIGHT/SWITCH

B

B

B

GAUGE & DASH

B

ILLUMINATION LAMPS

B

GENERATOR

D

F

+

-

STARTER

“FLASH-TO-PASS

*

SWITCH”

UW

UW

UW

UR

UR

RW

RW

RW

RW

RW

UW

RG

CIGAR LIGHTER

OIL PRESSURE/WATER TEMPERATURE

TACHOMETER

SPEEDOMETER

FUEL LEVEL

GENERATOR WARNING LAMP

NY

NY

NG

N

N

B F WLD E

N

REGULATOR

SOLENOID

UW

1 2

DIMMER

UR

SWITCH

RW

DIMMER

CONTROL

IGNITION

SWITCH

U

F

R

GAUGE

LAMP

UR

1 2

3

5

7

R

R

N

N

NN

R

W

3

N

4

6

8

U

W

W

2

1

WR

HEADLIGHT

SWITCH

N

W

BG

THROTTLE SWITCH

INTERLOCK SWITCH

4

6

WIPER

8

SWITCH

G

HEATER FAN

SWITCH

TRANSMISSION

G

HEATER FAN

YPYRYR

WIPER MOTOR

2

E

1

GNGN

GB

OVERDRIVE

SOLENOID

B

FUSE BOX

W

W

W

N

N

N

W

W

RADIO

CIGAR

LIGHTER

3

4

1 2

N

G

G

G

G

P

FUEL PUMP

B

TACHOMETER

G

W

OVERDRIVE

ON - OFF SWITCH

W

IGNITION

COIL

WB

Y

DISTRIBUTOR

Y

W1

C2

W2

C1

1 2

3

5

7

G

B I

G

G

LG/G

FUEL GAUGE & SENDER

R

GAUGE VOLTAGE

R

R

R

TURN SIGNAL

FLASHER

B

B

LIGHTS

R

R

R

B

PB

HORN

BUTTON

PB

PB

P

HORNS

P

G

B

LG/P

LG/N

L

STABILIZER

*TS SWITCH

(LG/N)

(GW)

(GR)

GW

GR

GW

GW

G

G

RH FRONT

RH REAR

B

B

p
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A PUBLICATION 5 © 200

FRONT PARKING

GR

G

LG/P

B

B

TAIL LIGHTS &

R

R

R

R

R

LG/P

LG/U

green

LG/Y

green

RH TS

INDICATOR

LH TS

INDICATOR

G

GP

BRAKE SWITCH

GR

G

GP

LICENSE PLATE LAMPS

R

REVERSE LIGHTS

& SWITCH

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink

GBBG

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

B

P Purple S Slate O Orange

*These two switches are combined in one housing

DIAGRAM 2 - 64/67 MGB

LH REAR

LH FRONT

GP

GP

GNGNG

GN

B

B

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

FROM BENTLEY B51798

sheet 2

-

F + B+

REGULATOR

WIPER

SWITCH

7

8

6

5

3

4

1 2

YRYW

TRANSMISSION

INTERLOCK SWITCH

NB

Ind

F

-

+

NG

N

ALTERNATOR

NY

IGNITION

SWITCH

N

W

W

W

2

1

3

N

WR

W

RADIO

FUEL PUMP

W

OVERDRIVE

ON - OFF SWITCH

TACHOMETER

WB

W

G

IGNITION

COIL

YP

OVERDRIVE

SOLENOID

WIPER MOTOR

U/LG

R/LG

N/LG

G

DISTRIBUTOR

-

+

-

BATTERIES

UW

HIGH BEAM INDICATOR

B

B

HIGH BEAMS

B

B

LOW BEAMS

UW

UR

STARTER

+

“FLASH-TO-PASS

*

SWITCH”

UW

UR

UW

N

B

G

CIGAR

LIGHTER

G

G

G

G

P

P

R

COURTESY LAMP

G

HEATER FAN

HEATER FAN

GNGN

SWITCH

G

G

B I

G

G

LG/G

GB

B

FUEL GAUGE & SENDER

B

P

PW

GAUGE VOLTAGE

STABILIZER

GW

G

RH FRONT

B

1 2

3

5

7

R

NN

R

N

4

6

8

U

HEADLIGHT

SWITCH

W

FUSE BOX

W

W

W

N

N
N

3

1 2

4

R

R

& DOOR SWITCHES

R

B

PW

PW

PB

HORN

BUTTON

TURN SIGNAL

(GW)

GW

GW

FLASHER

G

B

PB

PB

P

HORNS

P

LG/N

L

(LG/N)

*TS SWITCH

(GR)

GR

GR

U

F

UW

1 2

DIMMER

UR

SWITCH

UR

BG

R

B

B

LIGHTS

R

R

FRONT PARKING

GW

GR

GW

GR

G

G

green

green

RH REAR

B

INDICATOR

B

INDICATOR

LH REAR

RH TS

LH TS

B

p
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A PUBLICATION 5 © 200

B

R

R

R

R

COURTESY/MAP

LIGHT/SWITCH

B

B

B

RW

RW

RW

RG

CIGAR LIGHTER

OIL PRESSURE/WATER TEMPERATURE

SPEEDOMETER

RW

RW

R

GAUGE

LAMP

DIMMER

B

B

R

TAIL LIGHTS &

LICENSE PLATE LAMPS

CONTROL

GAUGE & DASH

B

ILLUMINATION LAMPS

B

RW

RW

TACHOMETER

FUEL LEVEL

GBBG

REAR WINDOW DEFROSTER

R

R

R

& SWITCH - GT ONLY

GR

G

GP

BRAKE SWITCH

G

REVERSE LIGHTS

& SWITCH

B

G

GP

GN

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.

*These two switches are combined in one housing

GP

GP

GNGN

GN

DIAGRAM 3 - 67/68 MGB

LH FRONT

B

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

FROM BENTLEY E1898W

sheet 3

ALTERNATOR

+

BATTERIES

-

HIGH BEAMS

LOW BEAMS

B+

Ind

Ind

+

NY

NN

ALTERNATOR WARNING

NY

-

STARTER

+

“FLASH-TO-PASS

*

SWITCH”

UW

HIGH BEAM INDICATOR

B

B

B

B

UW

UW

UR

UR

UW

LAMP

N

N

WR

UR

W

UW

DIMMER
SWITCH

U

F

1 2

W

IGNITION

SWITCH

N

N

N

NN

1 2

3

5

7

R

R

U

UR

7

1

2

3

WG

HEADLIGHT

N

4

6

8

W

W

6

5

4

SWITCH

WR

W

FUEL PUMP

W

OVERDRIVE

ON - OFF SWITCH

TACHOMETER

YRYW

TRANSMISSION

INTERLOCK SWITCH

WIPER

SWITCH

W

G

RADIO

IGNITION

COIL

CIGAR

LIGHTER

FUSE BOX

W

3

W

W

N

N
N

W

4

1 2

R

R

WG

G

G

G

G

P

P

R

COURTESY LAMP

B

B

P

PW

WB

DISTRIBUTOR

G

G

B I

G

G

GAUGE VOLTAGE

STABILIZER

7

5

3

1 2

G

HEATER FAN

LG/G

8

6

4

G

SWITCH

YP

OVERDRIVE

SOLENOID

WIPER MOTOR

U/LG

R/LG

N/LG

G

GNGN

HEATER FAN

GB

FUEL GAUGE & SENDER

GW

G

RH FRONT

B

B

& DOOR SWITCHES

BG

R

PW

PW

TURN SIGNAL

(GW)

GW

GW

GW

FLASHER

B

B

LIGHTS

FRONT PARKING

R

R

B

PB

HORN

BUTTON

PB

PB

P

HORNS

P

G

B

LG/N

L

(LG/N)

*TS SWITCH

(GR)

GR

GR

GR

GW

GR

G

G

green

green

RH REAR

B

INDICATOR

B

INDICATOR

LH REAR

RH TS

LH TS

B

p
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A PUBLICATION 5 © 200

B

B

B

TAIL LIGHTS &

R

R

LICENSE PLATE LAMPS

R

COURTESY/MAP

LIGHT/SWITCH

B

B

B

RW

RW

RW

RG

CIGAR LIGHTER

OIL PRESSURE/WATER TEMPERATURE

SPEEDOMETER

RW

RW

R

GAUGE

LAMP

DIMMER

R

CONTROL

GAUGE & DASH

B

ILLUMINATION LAMPS

B

RW

RW

TACHOMETER

GBBG

FUEL LEVEL

RR

R

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

GR

G

GP

BRAKE SWITCH

G

REVERSE LIGHTS

& SWITCH

B

G

GP

GN

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.

*These two switches are combined in one housing

GP

GP

GNGN

GN

DIAGRAM 4 - 68/69 MGB

LH FRONT

B

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

FROM BENTLEY E2333W

sheet 4

ALTERNATOR

+

BATTERIES

-

HIGH BEAMS

LOW BEAMS

B+

Ind

Ind

+

NY

NN

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

UW

UW

UR

UR

RP

COURTESY/MAP

LIGHT/SWITCH

CIGAR LIGHTER

RW

LAMP

STARTER

RELAY

N

NNN

WN

NN

HEADLIGHT

SWITCH

UW

FLASH-TO-PASS

UR

W

W2

C1

C2

W1

WR

RG

DIMMER &

*

SWITCH

CONTROL

RW

N

WN

1 2

N

3

5

7

(P)

(UW)

GAUGE

LAMP

DIMMER

RG

RG

RW

W

IGNITION

SWITCH

4

6

RG

8

U

(U)

1

(UR)

2

WG

FUEL PUMP

W

W

W

7

6

5

4

3

WR

W

W

ON - OFF SWITCH

OVERDRIVE

TRANSMISSION

INTERLOCK SWITCH

YRYW

TACHOMETER

OVERDRIVE

SOLENOID

YP

G

W

WIPER

SWITCH

7

8

6

5

3

4

1 2

W

WB

U/LG

R/LG

G

N/LG

G

WIPER MOTOR

G

IGNITION

COIL

DISTRIBUTOR

HEATER FAN MOTOR

W

BG

B

COURTESY LAMP

& DOOR SWITCHES

B

PW

PW

PB

*HORN

BUTTON

FUSE BOX

RG

W

W

N
N

PB

PB

R

1

2

R

R

4

3

R

G

PW

G

6

G

P

8

P

P

R

P

B

R

R

Right

B

LIGHTS

FRONT PARKING

B

P

P

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

R

Left

R

R

R

R

Right

Left

5

7

G

G

G

G

GAUGE VOLTAGE

STABILIZER

G

B I

TURN SIGNAL

R

G

FLASHER

B

LG/N

L

HEATER FAN

SWITCH

LG/G

(LG/N)

*TS SWITCH

GY

G

GP

BRAKE SWITCH

G

REVERSE LIGHTS

& SWITCH

LG/G

GW

(GW)

(GR)

GW

GR

GR

GY

GP

GN

GP

GP

GNGN

GN

B

GB

B

FUEL GAUGE & SENDER

GW

GW

GR

GW

GR

G

G

G

green

green

RH FRONT

RH REAR

RH TS

B

INDICATOR

LH TS

B

INDICATOR

LH REAR

B

B

B

p
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A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

B

B

GAUGE & DASH

B

ILLUMINATION LAMPS

B

OIL PRESSURE/WATER TEMPERATURE

RW

SPEEDOMETER

RW

TACHOMETER

RW

FUEL LEVEL

RW

WG

RADIO

WG

CIGAR

LIGHTER

GBBG

REAR WINDOW DEFROSTER

B

GR

G

& SWITCH - GT ONLY

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the

B

component they are connected to.
= one pin of a multi pin connector.
*These three switches are combined in one housing

DIAGRAM 5 - 68/70 MGB

LH FRONT

B

advance

AUTO-WIRE

FROM BENTLEY E2764W

sheet 5

ALTERNATOR

+

BATTERIES

-

B+

Ind

Ind

+

NY

NN

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

STARTER

RELAY

N

WN

LAMP

NNN

NN

WR

FUEL PUMP

W

W

IGNITION

SWITCH

W2

W1

N

C1

C2

WN

W

W

W

2

3

1

4

WR

WG

W

W

ON - OFF SWITCH

OVERDRIVE

TRANSMISSION

INTERLOCK SWITCH

TACHOMETER

OVERDRIVE

SOLENOID

YPYRYW

G

W

WB

W

IGNITION

COIL

DISTRIBUTOR

WG

GK

FUSE BOX

RG

1 2

N

3

5

RG

7

4

6

8

U

HEADLIGHT

SWITCH

RG

W

N

N
N

R

1

2

R

R

4

3

R

G

5

7

G

6

G

P

8

P
P

P

R

WIPER

SWITCH

7

8

6

5

3

4

1 2

GK

GK

GK

GK

GK

GK

HEATER FAN

SWITCH

U/LG

R/LG

G

N/LG

CIGAR

LIGHTER

GY

G

GP

BRAKE SWITCH

G

GN

WIPER MOTOR

GK

B

GY

GK

HEATER FAN MOTOR

GP

RADIO

GN

GP

GP

GN

B

B

HIGH BEAMSLOW BEAMS

B

B

UW

(U)

(P)

B

UW

UW

FLASH-TO-PASS

UR

UR

UR

GAUGE

DIMMER &

*

SWITCH

(UW)

(UR)

B

PW

COURTESY/MAP

LAMP & SWITCHES

PW

PW

PW

B

LIGHTS

FRONT PARKING

R

Left

R

Right

R

GAUGE VOLTAGE

STABILIZER

B I

GG

GGG

LAMP

DIMMER

CONTROL

RG

R

Left

B

RW

RW

TRUNK/HATCH

B

B

B

B

CIGAR LIGHTER

RW

OIL PRESSURE/WATER TEMPERATURE

RW

SPEEDOMETER

RW

GAUGE & DASH

PW

B

PB

P

PW

PB

LAMP & SWITCH

P

P

P

P

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

P

R

R

R

Right

TURN SIGNAL

R

G

FLASHER

B

LG/N

L

*TS SWITCH

REVERSE LIGHTS

LG/G

(LG/N)

& SWITCH

(GW)

(GR)

GW

GN

GB

B

FUEL GAUGE & SENDER

p
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A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

GW

GR

G

G

G

G

green

green

RH FRONT

RH REAR

RH TS

B

INDICATOR

LH TS

B

INDICATOR

LH REAR

LH FRONT

B

B

B

B

GW

GW

GW

GR

GR

GR

GR

ILLUMINATION LAMPS

B

B

RW

RW

TACHOMETER

FUEL LEVEL

B

*HORN

BUTTON

PB

P

GBBG

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

B

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
*These two switches are combined in one housing

advance

AUTO-WIRE

DIAGRAM 6 - 70/71 MGB

FROM BENTLEY E3212W

sheet 6

-

F + B+

REGULATOR

+

-

BATTERIES

†OVERDRIVE

NB

Ind

B+

+

NG

N

ALTERNATOR

NY

N

ALTERNATOR WARNING

N

N

LAMP

W

N

2

1

3

WR

W

IGNITION

SWITCH

W

W

W

ON - OFF SWITCH

W

W

W

TRANSMISSION

INTERLOCK SWITCH

YR

YPY

TACHOMETER

W

G

OVERDRIVE

SOLENOID

W

IGNITION

COIL

W

FUEL PUMP

W

WB

†WIPER/WASHER

SWITCH

(U/LG)

(G)

(R/LG)

(N/LG)

(B)

(LG/B)

U/LG

G

R/LG

N/LG

WIPER MOTOR

G

LG/B

WASHER MOTOR

G

DISTRIBUTOR

WR

-

FUSE BOX

+

STARTER

HEADLIGHT

SWITCH

N

3

4

R

R

2

1

U

W

W

1

W

N

3

N

N

W

2

4

WB

GAUGE VOLTAGE

STABILIZER

G

B I

G

G

LG/G

G

2

1

HEATER FAN

SWITCH

P

4

3

GY

HEATER FAN MOTOR

G

LG/G

TEMP GAUGE & SENDER

LG/G

OIL PRESSURE GAGE & SENDER

FUEL GAUGE & SENDER

GP

GU

WN

GB

B

B

B

GP

HIGH BEAM INDICATOR

B

B

HIGH BEAMSLOW BEAMS

B

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

UW

UW

UW

UR

UR

TACHOMETER

FUEL LEVEL

B

OIL PRESSURE

WATER TEMPERATURE

UW

UR

GAUGE

SWITCH

RW

CIGAR LIGHTER

SPEEDOMETER

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

R

LAMP

RW

RW

RW

RW

RW

RW

(P)

RW

RW

B

R

(U)

BW

BRAKE FAILURE
SWITCH & LAMP

CIGAR

LIGHTER

B

B

COURTESY LAMP

& DOOR SWITCHES

PW

PW

PB

*HORN

B

R

R

(UR)

R

B

B

LIGHTS

FRONT PARKING

B

B

TAIL LIGHTS &

R

R

R

R

R

R

R

R

R

R

R

R

R

LICENSE PLATE LAMPS

R

BUTTON

R

RG

B

RADIO

P

WG

WG

TURN SIGNAL

GW

LG/N

G

G

FLASHER

B

G

L

LG/N

(LG/N)

PW

P

HAZARD
SWITCH

GR

3

6

5

2

4

1

HAZARD

FLASHER

PB

PB

P

HORNS

P

N

G

L

B

P

LG/P

LG/N

*TS SWITCH

B

red

REVERSE LIGHTS

& SWITCH

BRAKE SWITCH

4

3

WB

2

1

(GW)

(GR)

RN

REAR WINDOW DEFROSTER

WB

& SWITCH - GT ONLY

GW

GW

GW

GW

GR

GR

GR

GNGNGN

GN

GW

GW

GR

GR

RN

GW

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate /three

DIAGRAM 7 - 67/68 MGB

WB

G

G

G

G

green

green

GP

RH FRONT

RH REAR

B

INDICATOR

B

INDICATOR

LH REAR

LH FRONT

RH TS

LH TS

B

p
m

d

A PUBLICATION 5 © 200

B

B

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

B

B

advance

AUTO-WIRE

FROM BENTLEY E1367W

sheet 7

ALTERNATOR

+

BATTERIES

-

†OVERDRIVE

W

B+

Ind

Ind

+

NY

NN

ALTERNATOR WARNING

NY

N

N N

LAMP

N

IGNITION

SWITCH

N

2

W

W

3

1

WR

W

W

ON - OFF SWITCH

W

W

W

B

TRANSMISSION

INTERLOCK SWITCH

YR

TACHOMETER

WN

YPY

W

G

G

G

OIL PRESSURE

GAGE & SENDER

WR

-

STARTER

+

HEADLIGHT

SWITCH

3

4

R

2

1

U

W

W

W

N

FUSE BOX

1

2

3

4

OVERDRIVE

SOLENOID

W

P

IGNITION

COIL

W

FUEL PUMP

W

WB

DISTRIBUTOR

†WIPER/WASHER

SWITCH

GAUGE VOLTAGE

STABILIZER

G

B I

G

G

(U/LG)

(G)

(R/LG)

(N/LG)

(B)

(LG/B)

U/LG

R/LG

N/LG

LG/G

HEATER FAN

SWITCH

G

WIPER MOTOR

G

G

LG/G

WASHER MOTOR

LG/B

G

GU

TEMP GAUGE & SENDER

B

GB

B

FUEL GAUGE & SENDER

2

1

G

GY

HEATER FAN MOTOR

4

3

GP

GP

HIGH BEAM INDICATOR

B

B

HIGH BEAMSLOW BEAMS

B

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

UW

UW

UW

UR

UR

TACHOMETER

FUEL LEVEL

B

OIL PRESSURE

WATER TEMPERATURE

UW

UR

GAUGE

SWITCH

RW

CIGAR LIGHTER

SPEEDOMETER

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

R

LAMP

RW

RW

RW

RW

RW

RW

(P)

RW

RW

B

R

(U)

BW
BW

BRAKE FAILURE

& TEST SWITCH

& LAMP

CIGAR

LIGHTER

B

B

COURTESY LAMP

& DOOR SWITCHES

PW

PW

PB

*HORN

B

BUTTON

R

R

(UR)

R

B

B

LIGHTS

FRONT PARKING

B

B

TAIL LIGHTS &

R

R

R

R

R

R

R

R

R

R

R

R

R

LICENSE PLATE LAMPS

R

R

RG

B

RADIO

P

WG

BRAKE SWITCH

WB

4

3

RN

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

2

1

WG

GW

P

PW

PB

PB

P

HORNS

P

HAZARD
SWITCH

GR

3

6

5

2

4

1

TURN SIGNAL

GW

LG/N

G

G

HAZARD

FLASHER

N

G

FLASHER

B

G

B

P

L

LG/N

(LG/N)

*TS SWITCH

LG/N

L

LG/P

B

red

REVERSE LIGHTS

& SWITCH

(GW)

(GR)

GW

GW

GW

GW

GW

GR

GR

GR

GNGNGN

GN

GW

GR

GR

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate /three

DIAGRAM 8 - 68/69 MGB

WB

G

G

G

G

green

green

GP

RH FRONT

RH REAR

B

INDICATOR

B

INDICATOR

LH REAR

LH FRONT

RH TS

LH TS

B

p
m

d

A PUBLICATION 5 © 200

B

B

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

B

B

advance

AUTO-WIRE

FROM BENTLEY E2235W

sheet 8

ALTERNATOR

N

+

BATTERIES

-

HIGH BEAMSLOW BEAMS

FRONT & REAR

SIDE MARKERS

GAUGE & DASH

ILLUMINATION LAMPS

B+

Ind

Ind

+

NY

NN

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

B

B

B

B

B

UW

UW

UR

UR

U

U

U

U

SPEEDOMETER

WATER TEMPERATURE

B

OIL PRESSURE

FUEL LEVEL

LAMP

STARTER

RELAY

N

N

WN

UW

UR

U

U

U

GAUGE

SWITCH

RW

CIGAR LIGHTER

TACHOMETER

W

W2

W1

WR

N

NN

N

C1

C2

WN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RG

LAMP

RW

RWRWRW

RW

RW

(P)

RW

RW

4

2

WG

WR

N

3

1

U

(U)

IGNITION

SWITCH

5

1

N

RG

(UR)

RG

RG

PK

BUZZER

RG

3

2

PK

W

W

W

LH DOOR

SWITCH

PG

W

W

P

P

P

P

B

BW
BW

B

B

COURTESY LAMP

& DOOR SWITCHES

B

RP

†OVERDRIVE

ON - OFF SWITCH

W

W

W

FUSE BOX

RG

W

N

N
N

P

BRAKE FAILURE

& TEST SWITCH

& LAMP

CIGAR

LIGHTER

PW

PW

PB

PB

PB

*HORN

BUTTON

B

B

OIL PRESSURE

GAGE & SENDER

R

1

2

R
R

4

3

R

G

PW

6

8

WG

P

HORNS

G
G

P
P
P

P

5

7

TRANSMISSION

INTERLOCK SWITCH

YR

TACHOMETER

WN

P

FRONT PARKING

TAIL LIGHTS &

P

LIGHTS

LICENSE PLATE LAMPS

G

G

B

B

B

B

RADIO

OVERDRIVE

SOLENOID

YPY

FUEL PUMP

W

W

G

WB

†WIPER/WASHER

SWITCH

(U/LG)

(G)

(R/LG)

(N/LG)

(B)

(LG/B)

U/LG

G

R/LG

N/LG

WIPER MOTOR

G

LG/B

G

WASHER MOTOR

IGNITION

COIL

DISTRIBUTOR

GAUGE VOLTAGE

LG/G

GU

TEMP GAUGE & SENDER

STABILIZER

B

G

B I

LG/G

LG/G

GB

B

FUEL GAUGE & SENDER

G

G

G

G

R

G

HEATER FAN

G

1

2

G

GY

HEATER FAN MOTOR

4

3

SWITCH

R

Right

Left

R

R

R

R

R

Right

Left

G

R

GP

BRAKE SWITCH

WB

4

3

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

R

R

HAZARD
SWITCH

R

GR

3

6

5

2

4

1

TURN SIGNAL

GW

LG/N

G

G

FLASHER

B

G

L

LG/N

(LG/N)

HAZARD

LG/N

*TS SWITCH

B

red

WG

FLASHER

N

B

P

G

L

LG/P

2

1

GW

GW

GW

(GW)

(GR)

GW

GR

GR

GR

GR

GR

GNGNGN

REVERSE LIGHTS

& SWITCH

GN

RN

WB

GW

GW

G

G

GW

green

GR

green

G

G

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate /three

DIAGRAM 9 - 69/71 MGB

GP

GP

RH FRONT

RH REAR

B

INDICATOR

B

INDICATOR

LH REAR

LH FRONT

RH TS

LH TS

B

p
m

d

A PUBLICATION 5 © 200

B

B

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

B

B

advance

AUTO-WIRE

FROM BENTLEY E2766W

sheet 9

ALTERNATOR

N

+

BATTERIES

-

FRONT & REAR

SIDE MARKERS HIGH BEAMSLOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

Ind

B+

Ind

+

NY

NN

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

RW

RW

RW

RW

UW

UW

UR

UR

U

U

U

U

B

RW

RW

B

B

B

B

B

B

B

B

B

B

B

B

LAMP

W2

STARTER

RELAY

WN

W1

WR

N

N

N

NN

HEADLIGHT

SWITCH

UW

*

FLASH-TO-PASS

UR

U

U

U

CIGAR LIGHTER

OIL PRESSURE

FUEL LEVEL

WATER TEMPERATURE

TACHOMETER

SPEEDOMETER

W

N

C1

C2

WN

(UW)

DIMMER &

SWITCH

RG

RW

RW

WG

WR

N

3

4

2

1

U

(U)

(P)

RG

GAUGE

LAMP

DIMMER

CONTROL

RW

IGNITION

SWITCH

5

1

N

RG

(UR)

PK

BUZZER

3

2

PK

W

W

W

LH DOOR

SWITCH

PG

W

W

P

P

P

P

B

BW
BW

B

B

COURTESY LAMP

& DOOR SWITCHES

GT

B

PW

B

B

†OVERDRIVE

ON - OFF SWITCH

W

W

RG

W

N

N
N

BRAKE FAILURE

& TEST SWITCH

CIGAR

LIGHTER

PW

PW

P

PW

ROADSTER

PB

PB

HORN

BUTTON

W

B

OIL PRESSURE

GAGE & SENDER

WG

FUSE BOX

R

1

2

R
R

4

3

5

7

P

& LAMP

PW

G

R

G

6

G

P

8

P
P

P

WG

TRUNK/HATCH

LAMP & SWITCH

P

PB

P

HORNS

TRANSMISSION

INTERLOCK SWITCH

YR

TACHOMETER

WN

GK

P

P

FRONT PARKING

P

P

P

TAIL LIGHTS &

P

OVERDRIVE

SOLENOID

YPY

FUEL PUMP

W

W

G

G

G

IGNITION

WB

COIL

DISTRIBUTOR

†WIPER/WASHER

SWITCH

(U/LG)

(GK)

(R/LG)

(N/LG)

(B)

(LG/B)

GK GK

GK

GK

GK

GK

U/LG

GK

R/LG

N/LG

WIPER MOTOR

GK

LG/B

GK

WASHER MOTOR

RADIO

2

1

GK

4

3

SWITCH

GY

HEATER FAN MOTOR

HEATER FAN

GP

GP

GU

GB

RH FRONT

RH REAR

B

B

LH REAR

LH FRONT

B

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

LG/G

GW

GW

GR

GP

TEMP GAUGE & SENDER

FUEL GAUGE & SENDER

B

GW

GW

GW

GW

GR

GR

GR

GR

G

G

GW

green

GR

green

G

G

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate

DIAGRAM 10 - 70/71 MGB

G

R

B

LIGHTS

B

R

Left

Right

R

R

GG

G G

4

R

3

GAUGE VOLTAGE

STABILIZER

B I

G

LG/G

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

2

B

R

R

1

BRAKE SWITCH

LG/G

RN

WB

Left

B

LICENSE PLATE LAMPS

R

R

Right

R

HAZARD
SWITCH

R

GR

3

6

5

2

4

1

TURN SIGNAL

GW

LG/N

G

G

FLASHER

B

G

L

LG/N

(GW)

(LG/N)

HAZARD

FLASHER

N

B

P

LG/N

L

LG/P

*TS SWITCH

B

red

(GR)

GNGNGNG

REVERSE LIGHTS

& SWITCH

GN

FROM BENTLEY E3211W

sheet 10

ALTERNATOR

+

BATTERIES

-

Ind

+

N

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

STARTER

RELAY

N

WN

LAMP

NNN

NN

WR

FUEL PUMP

W

W

IGNITION

SWITCH

W2

W1

N

C1

C2

WN

W

W

W

2

3

1

4

WR

WG

W

W

ON - OFF SWITCH

OVERDRIVE

TRANSMISSION

INTERLOCK SWITCH

TACHOMETER

OVERDRIVE

SOLENOID

YPYRYW

G

W

WB

W

IGNITION

WIPER

SWITCH

7

8

6

5

3

4

1 2

GK GK

GK GK

U/LG

R/LG

G

N/LG

WIPER MOTOR

GK

GK

COIL

N

RG

HEADLIGHT

SWITCH

1 2

3

4

5

6

7

8

U

HEADLIGHT

SWITCH

RG

FUSE BOX

RG

W

N

N
N

DISTRIBUTOR

WG

R

1

2

R

R

4

3

R

G

5

7

G

6

G

P

8

P
P

P

GK

GK

GK

GY

GY

HEATER FAN

SWITCH

G

GP

BRAKE SWITCH

R

G

RADIO

HEATER FAN MOTOR

GP

GN

GP

GP

GNGN

B

B

HIGH BEAMSLOW BEAMS

B

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

B

UW

UW

UR

UR

TACHOMETER

RW

FUEL LEVEL

RW

RW

CIGAR LIGHTER

SPEEDOMETER

RW

OIL PRESSURE/WATER TEMPERATURE

RW

UW

FLASH-TO-PASS

UR

GAUGE

LAMP

DIMMER

CONTROL

DIMMER &

*

SWITCH

RW

(UW)

(U)

(P)

R

Left

R

Right

R

R

Left

R

GG

GGG

GAUGE VOLTAGE

STABILIZER

B I

LG/G

RW

B

CIGAR

(UR)

RG

COURTESY LAMP

& DOOR SWITCHES

B

B

LIGHTER

PW

PW

PW

P

P

MARKER LIGHTS

FRONT PARKING &

B

B

P

TURN SIGNAL

P

TRUNK/HATCH

B

PW

B

PB

P

PW

PB

LAMP & SWITCH

P

P

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

P

R

R

Right

R

4

3

FLASHER

G

B

LG/N

L

*TS SWITCH

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

B

HORN

BUTTON

PB

P

2

1

(LG/N)

RN

WB

REVERSE LIGHTS

& SWITCH

LG/G

GW

(GW)

(GR)

GW

GR

GR

B

GN

GB

FUEL GAUGE & SENDER

GW

GR

G

G

green

green

RH FRONT

RH REAR

RH TS

B

INDICATOR

LH TS

B

INDICATOR

GW

GW

LH REAR

GR

G

LH FRONT

GR

G

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

B

B

B

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

DIAGRAM 11 - 71/72 MGB

FROM BENTLEY E3212AW

sheet 11

ALTERNATOR

N

+

BATTERIES

-

HIGH BEAMSLOW BEAMS

FRONT & REAR

SIDE MARKERS

GAUGE & DASH

ILLUMINATION LAMPS

Ind

+

N

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

RW

RW

RW

RW

UW

UW

UR

UR

U

U

U

U

B

RW

RW

B

B

B

B

B

B

B

B

B

B

B

B

LAMP

W2

STARTER

RELAY

WN

W1

WR

N

N

N

NN

HEADLIGHT

SWITCH

UW

*

FLASH-TO-PASS

UR

U

U

U

GAUGE

LAMP

DIMMER

CONTROL

CIGAR LIGHTER

OIL PRESSURE

FUEL LEVEL

WATER TEMPERATURE

TACHOMETER

SPEEDOMETER

W

N

C1

C2

WN

(UW)

DIMMER &

SWITCH

RG

RW

RW

R

Left

Right

R

R

R

R

R

OVERDRIVE

SOLENOID

IGNITION

COIL

R

R

R

R

Left

Right

PB

PB

PB

PB

HORN

HORN

BUTTON

BUTTON

†WIPER/WASHER

SWITCH

(U/LG)

(GK)

(R/LG)

(N/LG)

(B)

(LG/B)

GK GK

GK

GK

GK

GK

U/LG

GK

R/LG

N/LG

WIPER MOTOR

GK

LG/B

GK

WASHER MOTOR

W

FUEL PUMP

W

WB

DISTRIBUTOR

RADIO

2

1

GK

4

3

SWITCH

GY

HEATER FAN MOTOR

HEATER FAN

GP

GP

GU

GAUGE VOLTAGE

G

GP

BRAKE SWITCH

LG/G

TEMP GAUGE & SENDER

STABILIZER

B

B I

GG

G

LG/G

LG/G

GB

B

FUEL GAUGE & SENDER

G

G

RN

4

3

REAR WINDOW DEFROSTER

G

2

1

HAZARD
SWITCH

R

PB

PB

B

B

G

7

8

LG/P LG/N

3

4

12

GR

GW

& SWITCH - GT ONLY

TURN SIGNAL

FLASHER

G

L

B

HAZARD

FLASHER

N

B

G

LG/N

L

LG/P

WB

LG/N

(LG/N)

*TS SWITCH

B

red

REVERSE LIGHTS

& SWITCH

(GW)

(GR)

B

GW

G

GW

G

GW

GW

GW

GR

GR

GR

GNGNGN

GN

GW

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate

DIAGRAM 12 - 71/72 MGB

green

green

RH FRONT

RH REAR

RH TS

B

INDICATOR

LH TS

B

INDICATOR

LH REAR

LH FRONT

B

B

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

TRANSMISSION

INTERLOCK SWITCH

YR

TACHOMETER

GK

YPY

G

G

IGNITION

SWITCH

WG

WR

†OVERDRIVE

ON - OFF SWITCH

W

W

W

3

5

2

1

N

PK

W

W

W

W

W

WG

FUSE BOX

N

3

4

RG

2

1

U

(U)

(P)

P

P

P

P

B

BW
BW

RG

W

N

N
N

P

BRAKE FAILURE

& TEST SWITCH

& LAMP

CIGAR

(UR)

B

B

LIGHTER

COURTESY LAMP

& DOOR SWITCHES

PW

PW

TRUNK/HATCH

B

PW

RG

PK

B

P

PW

LAMP & SWITCH

R

1

2

R

R

4

3

R

G

5

7

G

6

G

P

8

P
P

B

P

P

LIGHTS

P

P

PW

P

P

P

P

B

FRONT PARKING

B

B

TAIL LIGHTS &

LICENSE PLATE LAMPS

LH DOOR

SWITCH

RW

PG

P

BUZZER

P

HORNS

HORNS

P

P

FROM BENTLEY E3212AW

sheet 12

ALTERNATOR

N

+

†OVERDRIVE

W

Ind

+

N

-

ALTERNATOR WARNING

STARTER

RELAY

N

N

WN

LAMP

W2

W1

WR

N

NN

NY

N

C1

C2

WN

IGNITION

SWITCH

WG

WR

W

W

3

5

2

1

N

PK

W

W

W

ON - OFF SWITCH

W

W

W

Y

WG

TRANSMISSION

INTERLOCK SWITCH

YPY

TACHOMETER

GK

G

G

OVERDRIVE

SOLENOID

IGNITION

COIL

W

FUEL PUMP

W

WB

DISTRIBUTOR

†WIPER/WASHER

SWITCH

(U/LG)

(GK)

(R/LG)

(N/LG)

(B)

(LG/B)

GK GK

GK

GK

GK

GK

U/LG

GK

R/LG

N/LG

WIPER MOTOR

GK

LG/B

GK

WASHER MOTOR

RADIO

BATTERIES

-

HIGH BEAM INDICATOR

B

B

HIGH BEAMSLOW BEAMS

B

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

RW

RW

RW

RW

+

UW

UW

UR

UW

UR

B

STARTER

CIGAR LIGHTER

OIL PRESSURE

RW

WATER TEMPERATURE

RW

SPEEDOMETER

UW

UR

GAUGE

LAMP

DIMMER

CONTROL

FUEL LEVEL

TACHOMETER

N

HEADLIGHT

SWITCH

(P)

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RG

RG

RW

RW

RW

SEATBELT BUCKLE

SWITCHES

3

RG

2

1

U

(U)

(UR)

PASSENGER

LG/W

PK

LH DOOR

SWITCH

BUZZER

DRIVER

P

P

P

P

B

BW
BW

B

B

COURTESY LAMP

& DOOR SWITCHES

B

PW

B

PG

PG

PASSENGER SEAT

SWITCH

NR

RG

W

N

N
N

BRAKE FAILURE

& TEST SWITCH

CIGAR

LIGHTER

PW

PW

P

PW

NR

FUSE BOX

R

1

2

R

R

4

3

R

G

PW

G

6

G

P

8

P
P

P

P

5

7

P

& LAMP

TRUNK/HATCH

LAMP & SWITCH

P

SEATBELT

WARNING LAMP

NR

NR

GEARBOX SWITCH

GK

3

2

SWITCH

GY

GY

HEATER FAN MOTOR

HEATER FAN

G

GP

BRAKE SWITCH

R

B

P

P

B

B

MARKER LIGHTS

FRONT PARKING &

B

R

Left

R

R

Right

R

R

GAUGE VOLTAGE

STABILIZER

B I

R

R

G G

GG

G

3

2

G

REAR WINDOW DEFROSTER

RN

WB

& SWITCH - GT ONLY

LG/G

RN

WB

Left

R

R

HAZARD

R

R

R

Right

R

R

PB

PB

PB

PB

PB

PB

P

P

HORN

HORN

BUTTON

BUTTON

B

B

SWITCH

G

7

8

LG/P

LG/P LG/N

3

4

12

GR

GW

TURN SIGNAL

FLASHER

G

B

HAZARD

FLASHER

N

B

G

LG/N

L

LG/P

L

LG/N

(LG/N)

*TS SWITCH

B

REVERSE LIGHTS

& SWITCH

P

B

LG/W

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

P

P

HORNS

HORNS

G

B

B

P

P

LG/G

(GW)

(GR)

LG/G

TEMP GAUGE & SENDER

FUEL GAUGE & SENDER

B

GW

G

GW

G

GW

GW

GW

GR

GR

GR

GNGNGN

GN

GW

green

GR

green

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate

DIAGRAM 13 - 71/72 MGB

GP

GP

GU

GB

RH FRONT

RH REAR

B

B

LH REAR

LH FRONT

B

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

FROM BENTLEY E3211BW

sheet 13

ALTERNATOR

+

BATTERIES

-

Batt +

Ind

+

NN

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

STARTER

RELAY

WN

LAMP

NNN

NN

WR

FUEL PUMP

W

WG

W

W

W

3

12

5

WR

W

IGNITION

SWITCH

W2

W1

N

C1

C2

WN

W

W

ON - OFF SWITCH

OVERDRIVE

TRANSMISSION

INTERLOCK SWITCH

YPYRYW

OVERDRIVE

SOLENOID

W

W

WB

WB

IGNITION

COIL

WIPER

SWITCH

1

2

3

4

5

GK GK

GK GK

WIPER MOTOR

U/LG

GK

R/LG

N/LG

GK

GK

DISTRIBUTOR

MOTOR

GN

RADIO

GP

GP

GNGN

HEADLIGHT

SWITCH

N

2

3

1

U

WG

FUSE BOX

RG

W

W

RG

N
N

R

1

2

R

R

4

3

R

G

5

7

G

6

G

P

8

P
P

P

GK

3

2

1

GY

HEATER FAN

HEATER FAN

SWITCH

G

GP

GP

BRAKE SWITCH

R

G

B

B

HIGH BEAMSLOW BEAMS

B

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

B

UW

UW

UR

UR

TACHOMETER

RW

FUEL LEVEL

RW

RW

CIGAR LIGHTER

SPEEDOMETER

RW

OIL PRESSURE/WATER TEMPERATURE

RW

UW

FLASH-TO-PASS

UR

GAUGE

LAMP

DIMMER

CONTROL

DIMMER &

*

SWITCH

RW

(UW)

(U)

(P)

R

Left

R

Right

R

R

Left

R

GG

GGG

GAUGE VOLTAGE

STABILIZER

B I

WB

G

LG/G

TACHOMETER

RW

B

CIGAR

(UR)

RG

COURTESY LAMP

& DOOR SWITCHES

B

B

LIGHTER

PW

PW

PW

P

P

MARKER LIGHTS

FRONT PARKING &

B

B

P

TURN SIGNAL

P

B

B

B

PW

PW

PB

HORN

BUTTON

TRUNK/HATCH

LAMP & SWITCH

P

P

PB

PB

P

P

R

R

Right

R

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

P

G

2

REAR WINDOW DEFROSTER

RN

3

WB

FLASHER

G

B

LG/N

L

& SWITCH - GT ONLY

*TS SWITCH

RN

WB

REVERSE LIGHTS

(LG/N)

& SWITCH

LG/G

(GW)

(GR)

B

GW

GN

GB

B

FUEL GAUGE & SENDER

GW

GW

GW

GR

GR

GR

GR

G

G

GW

GR

G

G

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

green

green

RH FRONT

RH REAR

RH TS

B

INDICATOR

LH TS

B

INDICATOR

LH REAR

LH FRONT

B

B

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

DIAGRAM 14 - 72/73 MGB

FROM BENTLEY 3NB064

sheet 14

ALTERNATOR

+

BATTERIES

-

HIGH BEAMSLOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

batt

N

Ind

+

NN

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

B

B

B

UW

UW

UR

UR

B

HAZARD SWITCH

B

HEADLIGHT SWITCH

B

SPEEDOMETER

TACHOMETER

B

HEATER FAN

B

OIL PRESSURE

CIGAR LIGHTER

HEATER CONTROL

HEATER CONTROL

TEMPERATURE

FUEL LEVEL

LAMP

N

WN

UW

UR

GAUGE

LAMP

DIMMER

CONTROL

RW

RW

W

STARTER

RELAY

W2

C1

C2

W1

WNWR

NNN

NN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RG

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

IGNITION

SWITCH

WG

3

N

1

U

(U)

(P)

RG

RW

†OVERDRIVE

ON - OFF SWITCH

W

W

3

4

2

5

S

6

W

W

W

SP

SY

TRANSMISSION

INTERLOCK SWITCH

YPYY

1

WR

PK

ANTI RUN-ON

VALVE & SWITCH

OVERDRIVE

SOLENOID

W

FUEL PUMP

W

WB

WB

†WIPER/WASHER

SWITCH

(U/LG)

(GK)

(R/LG)

(N/LG)

(B)

(LG/B)

U/LG

GK

R/LG

N/LG

WIPER MOTOR

GK

LG/B

GK

WASHER MOTOR

IGNITION

COIL

GK

DISTRIBUTOR

WG

N

RG

RG

2

P

B

BW
BW

BRAKE FAILURE

& TEST SWITCH

(UR)

B

CIGAR

LIGHTER

B

COURTESY LAMP

& DOOR SWITCHES

PW

PW

B

PK

PG

PG

BUZZER

PG

NR

NR

NR NR

PW

B

SEAT “BUTT”

SWITCH

PSNGR

WARNING LAMP

FUSE BOX

RG

W

W

N
N

P

& LAMP

TRUNK/HATCH

LAMP & SWITCH

P

PW

PG

LH DOOR

SWITCH

SEATBELT

DRIVER

SEATBELT BUCKLE

SWITCHES

PSNGR

LG/O

R

1

2

R

R

4

3

R

G

PW

G

6

G

P

8

P
P

P

P

P P

P

G

G

R

Left

R

R

Right

R

R

R

GAUGE VOLTAGE

STABILIZER

R

R

GG

G

G

G

RN

3

2

WB

B I

G

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

P

B

B

P

B

MARKER LIGHTS

FRONT PARKING &

B

WB

G

TACHOMETER

LG/G

5

7

2

SWITCH

HEATER FAN

RN

WB

Left

P

P

P

P

P

B

B

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

P

HORNS

LG/W

G

R

R

HAZARD

R

R

R

Right

R

R

PB

PB

PB

P

HORN

BUTTON

B

SWITCH

G

5

6

LG/P

LG/P LG/N

3

4

12

GR

GW

TURN SIGNAL

FLASHER

G

B

HAZARD

FLASHER

N

B

LG/N

L

LG/P

L

LG/N

(LG/N)

*TS SWITCH

B

REVERSE LIGHTS

& SWITCH

GEARBOX SWITCH

GK

GK

3

G

BRAKE SWITCH

LG/G

LG/G

(GW)

GW

(GR)

GR

GNGNGNG

GN

GW

GR

GY

GP

TEMP GAUGE & SENDER

FUEL GAUGE & SENDER

B

GW

GW

GW

GR

GR

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate

DIAGRAM 15 - 72/73 MGB

RADIO

HEATER FAN MOTOR

GP

GP

GU

GB

G

G

GW

GR

G

G

green

green

RH FRONT

RH REAR

B

INDICATOR

B

INDICATOR

LH REAR

LH FRONT

RH TS

LH TS

B

p
m

d

A PUBLICATION 5 © 200

B

B

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

B

B

advance

AUTO-WIRE

FROM BENTLEY 2NB034

sheet 15

ALTERNATOR

Batt +

N

ALTERNATOR WARNING

W

Ind

+

NY

NN

STARTER

RELAY

N

N

WN

W1

W2

C1

N

N

N

NN

LAMP

YPYRYW

WR

IGNITION

C2

SWITCH

WN

3

1

N

5

2

WG

N

N N

W

W

GKWG

FUEL PUMP

W

WB

WB

IGNITION

TACHOMETER

G

COIL

DISTRIBUTOR

OVERDRIVE

ON - OFF SWITCH

WIPER

SWITCH

1

2

3

4

5

GK

GK

GK

GK

U/LG

GK

R/LG

N/LG

TRANSMISSION

INTERLOCK SWITCH

WIPER MOTOR

GK

GK

OVERDRIVE

SOLENOID

-

+

-

BATTERIES

HIGH BEAM INDICATOR

B

B

HIGH BEAMSLOW BEAMS

B

B

B

B

B

GAUGE & DASH

B

ILLUMINATION LAMPS

B

STARTER

+

UW

UW

UW

UR

UR

CIGAR LIGHTER

OIL PRESSURE/WATER TEMPERATURE

SPEEDOMETER

TACHOMETER

FUEL LEVEL

UW

UR

N

HEADLIGHT

SWITCH

(P)

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RW

RW

RW

RW

CONTROL

RW

RW

RG

3

2

1

U

(U)

GAUGE

LAMP

DIMMER

(UR)

RG

P

RG

1

3

W

5

W

N

7

N

R

2

R

R

4

R

G

6

G

P

8

P

3

2

1

HEATER FAN

SWITCH

GY

HEATER FAN

G

GP

GP

RADIO

MOTOR

GP

BRAKE

CIGAR

LIGHTER

B

P

P

R

BRAKE SWITCH

G

GN

GN

LIGHTS

GP

GN

REVERSE

G

G

G

G

LIGHTS

green

green

GN

GB

RH FRONT

RH REAR

B

B

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

B

PW

PW

PW

COURTESY LAMP

B

LIGHTS

B

FRONT PARKING

& DOOR SWITCHES

P P

B

GT

TRUNK OR HATCH

B

PW

B

RG

LAMP & SWITCH

P

Roadster

PW

B

P

TAIL LIGHTS &

LICENSE PLATE LAMPS

PB

R

Left

Right

R

R

R

R

R

Left

Right

R

G

B I

G

LG/G

GAUGE VOLTAGE

G

R

R

R

G

G

G

HAZARD
SWITCH

G

8

4

TURN SIGNAL

FLASHER

G

7

LG/N

3

12

GR

GW

B

STABILIZER

L

LG/N

(LG/N)

HAZARD

FLASHER

N

B

L

LG/N

*TS SWITCH

REVERSE SWITCH

LG/G

(GW)

(GR)

GW

GR

FUEL GAUGE & SENDER

GW

GW

GR

GR

HORN

B

BUTTON

HORNS

PBPP

REAR WINDOW

DEFROSTER SWITCH

RN

2

WB

3

REAR WINDOW DEFROSTER

& INDICATOR (GT only)

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

DIAGRAM 16 - 73/74 MGB

FROM BENTLEY 3NB056

sheet 16

ALTERNATOR

N

+

BATTERIES

-

HIGH BEAMSLOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

batt

N

Ind

+

NN

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

B

B

B

UW

UW

UR

UR

B

HAZARD SWITCH

SPEEDOMETER

B

HEADLIGHT SWITCH

B

FUEL LEVEL

TACHOMETER

B

HEATER FAN

B

CIGAR LIGHTER

HEATER CONTROL

HEATER CONTROL

TEMPERATURE

OIL PRESSURE

LAMP

N

N

WN

UW

UR

GAUGE

LAMP

DIMMER

CONTROL

RW

RW

W

STARTER

RELAY

W2

C1

C2

W1

WNYK

N

NN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

N

(P)

RG

RW

IGNITION

SWITCH

(WG)

(WR)

3

2

1

U

(U)

LH DOOR

SWITCH

(UR)

OVERDRIVE

ON - OFF SWITCH

W

(W)

(S)

(N)

(PK)

W

W W

SP

SY

ANTI RUN-ON

VALVE & SWITCH

TRANSMISSION

INTERLOCK SWITCH

YPYY

OVERDRIVE

SOLENOID

W

FUEL PUMP

W

WB

WB

WIPER/WASHER

SWITCH

(U/LG)

(GK)

(R/LG)

(N/LG)

(B)

(LG/B)

U/LG

GK

R/LG

N/LG

WIPER MOTOR

GK

LG/B

GK

WASHER MOTOR

IGNITION

COIL

WR

DISTRIBUTOR

RADIO

N

RG

RG

RG

P
P

NP

B

BW
BW

LIGHTER

B

B

COURTESY LAMP

PK

PG

NP

BUZZER

& DOOR SWITCHES

NP

NP

DRIVER

PSNGR

NP

YK

WR

YO

PG

B

B

1 2

4

7

10

YU

PW

PW

PW

YU

YG

5 6

8 9

11 12

YN

SEATBELT

MODULE

FUSE BOX

RG

3

W

W

5

N

N

7

N

P

BRAKE FAILURE

& TEST SWITCH

& LAMP

CIGAR

TRUNK/HATCH

LAMP & SWITCH

P

PW

SEAT SWITCHES

G

NP

SEATBELT

WARNING LAMP

3

B

PSNGR

YW

YG

DRIVER

R

1

2

R

R

4

R

G
G

6

G

P

8

P

PW

P

G

G

R

B

P

P

P

P

B

B

MARKER LIGHTS

FRONT PARKING &

B

R

Left

R

R

Right

R

R

GAUGE VOLTAGE

STABILIZER

R

R

GG

G

G

G

WB

3

2

WB

B I

G

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

WB

G

TACHOMETER

LG/G

2

SWITCH

HEATER FAN

WB

WB

Left

P

P

P

P

YP

B

B

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

P

HORNS

SEATBELT BUCKLE

SWITCHES

YO

G

R

R

HAZARD

R

R

R

Right

R

R

PB

PB

PB

P

HORN

BUTTON

B

SWITCH

G

5

6

LG/P

LG/P LG/N

3

4

12

GR

GW

TURN SIGNAL

FLASHER

G

B

HAZARD

FLASHER

N

B

LG/N

L

LG/P

L

LG/N

(LG/N)

*TS SWITCH

B

REVERSE LIGHTS

& SWITCH

GEARBOX SWITCH

HEATER FAN MOTOR

GK

3

G

BRAKE SWITCH

LG/G

LG/G

(GW)

(GR)

GW

GW

GR

GR

GNGNGNG

GN

GY

GP

GP

GP

GU

TEMP GAUGE & SENDER

GB

B

FUEL GAUGE & SENDER

p

B

GW

GW

G

GW

G

GW

GR

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.

green

green

RH FRONT

RH REAR

RH TS

B

INDICATOR

LH TS

B

INDICATOR

LH REAR

LH FRONT

B

B

B

B

m
d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

DIAGRAM 17 - 73/74 MGB

FROM BENTLEY 3NB067

sheet 17

ALTERNATOR

N

+

BATTERY

HIGH BEAMSLOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

Ind

+

NN

ALTERNATOR WARNING

NY

-

STARTER

UW

HIGH BEAM INDICATOR

RW

RW

RW

UW

UW

UR

UR

B

RW

RW

B

B

B

B

B

B

B

LAMP

RADIO

CONNECTION

W2

STARTER

RELAY

WN

WLG

W1

WR

N

N

N

NN

HEADLIGHT

SWITCH

UW

*

FLASH-TO-PASS

UR

GAUGE

LAMP

DIMMER

CONTROL

CIGAR LIGHTER

FUEL LEVEL

WATER TEMPERATURE

OIL PRESSURE

TACHOMETER

SPEEDOMETER

W

N

C1

C2

WN

N

(UW)

DIMMER &

SWITCH

RW

(P)

RW

P

RG

2

IGNITION

SWITCH

WG

WR

RG

3

1

U

(U)

RG

(UR)

OVERDRIVE

ON - OFF SWITCH

W

5

1

W

2

N

W

3

W

W

Y

TRANSMISSION

INTERLOCK SWITCH

YPY YR

OVERDRIVE

SOLENOID

WLG

WLG

FUEL PUMP

W

WB

WB

WIPER/WASHER

SWITCH

(U/LG)

(G)

(R/LG)

(N/LG)

(B)

(LG/B)

WIPER MOTOR

U/LG

G

R/LG

N/LG

WASHER MOTOR

LG/B

G

IGNITION

COIL

DISTRIBUTOR

GP

BRAKE SWITCH

& LIGHTS

REVERSE LIGHTS

& SWITCH

HEATER FAN MOTOR

GY

W

N

N
N

CIGAR

LIGHTER

B

B

COURTESY LAMP

& DOOR SWITCHES

PW

PW

FUSE BOX

RG

1

3

5

7

PW

G

R

2

R
R

4

G

R

G

6

G

P

8

P
P

P

P

P

P

P

P

P

B

LIGHTS

B

FRONT PARKING

R

Left

Right

R

R

R

G G

GG

WB

G

G

2

HEATER FAN

SWITCH

TACHOMETER

GAUGE VOLTAGE

G

3

GY

STABILIZER

G

R

B I

LG/G

LG/G

FUEL GAUGE & SENDER

B

PB

PB

B

HORN

PB

P

HORNS

P

B

BUTTON

P

P

TRUNK/HATCH

B

PW

B

B

WB

P

PW

LAMP & SWITCH

P

P

WB

TAIL LIGHTS &

LICENSE PLATE LAMPS

C1

W1

C2

B

W2

REAR WINDOW DEFROSTER, SWITCH

B

RN

& INDICATOR LAMP - GT ONLY

R

R

GW

Left

R

R

R

Right

R

G

2

G

RN

3

HAZARD
SWITCH

G

8

4

TURN SIGNAL

FLASHER

7

3

12

GR

GW

G

LG/N

HAZARD

FLASHER

N

B

L

B

L

LG/N

LG/N

(LG/N)

*TS SWITCH

(GW)

(GR)

GW

GW

GW

GR

GR

GR

G

GW

G

GW

green

GR

green

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.

GP

GP

GNGNGN

GN

GB

RH FRONT

RH REAR

B

B

LH REAR

LH FRONT

B

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

DIAGRAM 18 - 75/76 MGB

FROM BENTLEY 5NB063

sheet 18

ALTERNATOR

+ +

N

W

W

ALTERNATOR WARNING

LAMP

Ind

NY

N

RADIO

WG (WG)

CONNECTION

(WR)

IGNITION

SWITCH

(W)

W

W

(S)

SP

SY

WLG

WLG

WB

WB

W

W

INERTIA
SWITCH

OVERDRIVE

ON - OFF SWITCH

W

TRANSMISSION

INTERLOCK SWITCH

YPYPYRY YW

OVERDRIVE

SOLENOID

W

N

BATTERY

-

HIGH BEAM INDICATOR

B

B

HIGH BEAMS

B

B

LOW BEAMS

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

B

STARTER

STARTER

+

UW

UW

UW

UR

UR

B

HAZARD SWITCH

SPEEDOMETER

B

HEADLIGHT SWITCH

B

FUEL LEVEL

B

OIL PRESSURE

B

TEMPERATURE

RELAY

N

W/LG

UW

UR

CIGAR LIGHTER

RW

RW

HEATER CONTROL

HEATER CONTROL

TACHOMETER

HEATER FAN

W2

C1

C2

W1

NW

NN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

GAUGE

LAMP

DIMMER

CONTROL

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

N

(P)

RG

RW

3

2

1

U

(U)

LH DOOR

SWITCH

(UR)

ANTI RUN-ON

(N)

(PK)

WR

WR

VALVE & SWITCH

GK

GK

EGR SERVICE

GW

COIL

IGNITION

G

BALLAST

WIRE

HEATER

INDUCTION

DISTRIBUTOR

G

COUNTER & LAMP

W

RG

RG

RG

P

P
P

N

NP

WN

B

1

RG

3 5

W

W

7

N

N

P

R

2

R

4

R
R

6

G
G

8

P
P

BRAKE FAILURE

BW
BW

& TEST SWITCH

& LAMP

P

P

CIGAR

P

LIGHTER

B

B

COURTESY LAMP

PK

PG

& DOOR SWITCHES

PW

PW

B

PW

PW

P

P

P

P

TRUNK LAMP

& SWITCH

YP

G

W

G

G

G

G

TACHOMETER

G

G

G

R

B

R

GGG

G

GK

Left

B

B

MARKER LIGHTS

FRONT PARKING &

B

R

R

Right

R

R

R

R

Left

B

R

R

HAZARD

P

B

B

R

R

R

Right

B

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

B

R

R

SWITCH

G

7

8

LG/P LG/N

3

4

12

GR

GW

SEATBELT WARNING LAMP

P
PG

YN

YP

B
WR

6
5
4

3
2
1

SEATBELT

MODULE

PB

P

PB

HORN

BUTTON

PB

B

G

SEATBELT BUCKLE

YN

SWITCH

B

WIPER/WASHER

SWITCH

(U/LG)

(G/K)

(R/LG)

(N/LG)

(B)

(LG/B)

WB

G

3

2

1

HEATER FAN

SWITCH

GAUGE VOLTAGE

STABILIZER

G

B I

G

TURN SIGNAL

FLASHER

G

L

B

HAZARD

FLASHER

N

B

LG/P

LG/N

L

green

REVERSE LIGHTS

& SWITCH

G

HEATER FAN MOTOR

GY

LG/G

LG/N

(LG/N)

*TS SWITCH

B

U/LG

R/LG

N/LG

FUEL PUMP

WIPER MOTOR

G

LG/B

G

G

G

GP

WASHER MOTOR

GP

BRAKE

SWITCH

LG/G

GP

GU

TEMP GAUGE & SENDER

LG/G

GB

FUEL GAUGE & SENDER

G

GW

G

GW

(GW)

(GR)

GNGNGN

GN

GW

GR

GW

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

1975 MGB W/PERIOD WARNING

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

FROM LATE BENTLEY

sheet 19

ALTERNATOR

+ +

N

W

W

ALTERNATOR WARNING

LAMP

Ind

NY

N

RADIO

WG (WG)

CONNECTION

(WR)

IGNITION

SWITCH

(W)

W

W

(S)

SP

SY

WLG

WLG

WB

WB

W

W

INERTIA
SWITCH

OVERDRIVE

ON - OFF SWITCH

W

TRANSMISSION

INTERLOCK SWITCH

YPYPYRY YW

OVERDRIVE

SOLENOID

W

N

BATTERY

-

HIGH BEAM INDICATOR

B

B

HIGH BEAMS

B

B

LOW BEAMS

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

B

STARTER

STARTER

+

UW

UW

UW

UR

UR

B

HAZARD SWITCH

SPEEDOMETER

B

HEADLIGHT SWITCH

B

FUEL LEVEL

B

OIL PRESSURE

B

TEMPERATURE

RELAY

N

W/LG

UW

UR

CIGAR LIGHTER

RW

RW

HEATER CONTROL

HEATER CONTROL

TACHOMETER

HEATER FAN

W2

C1

C2

W1

WN

NN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

GAUGE

LAMP

DIMMER

CONTROL

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

N

(P)

RG

RW

3

2

1

U

(U)

LH DOOR

SWITCH

RG

RG

(UR)

NP

BUZZER

SEATBELT

(N)

(PK)

P

P
P

PK

PG

MODULE

WR

WR

RG

N

NP

COURTESY LAMP

& DOOR SWITCHES

B

NP

NP

DRIVER

PSNGR

NP

YK

WR

1 2

WR

4

YO

7

PG

10

YU

ANTI RUN-ON

VALVE & SWITCH

GK

GK

EGR SERVICE

COUNTER & LAMP

W

WN

RG

W

W

N

N

N

B

BRAKE FAILURE

BW
BW

& TEST SWITCH

CIGAR

LIGHTER

B

B

PW

PW

PW

TRUNK

LAMP & SWITCH

YU

SEAT SWITCHES

YG

G

SEATBELT

WARNING LAMP

3

B

5 6

YW

8 9

11 12

YN

P

NP

PSNGR

YG

DRIVER

GW

1

2

4

3 5

6

G
G

8

7

& LAMP

PW

P

YP

G

R
R

R
R

P
P

P

P

P

P

P

P

P

SEATBELT BUCKLE

SWITCHES

YO

GEARBOX SWITCH

FRONT PARKING &

TAIL, REAR MARKER, &

BALLAST

W

B

B

B

MARKER LIGHTS

B

B

B

LICENSE PLATE LAMPS

HORNS

G

WIRE

P

R

Left

R

R

Right

R

P

IGNITION

R

Left

R

R

R

Right

R

R

COIL

R

R

PB

PB

R

R

R

HORN

BUTTON

WIPER/WASHER

WB

G

SWITCH

(U/LG)

(G/K)

(R/LG)

(N/LG)

(B)

(LG/B)

U/LG

G

R/LG

N/LG

G

HEATER

INDUCTION

DISTRIBUTOR

G

G

G

G

G

WIPER MOTOR

LG/B

FUEL PUMP

WASHER MOTOR

G

G

TACHOMETER

GP

GP

GGG

G

G

G

G

GK

3

2

1

HEATER FAN MOTOR

GY

G

GP

BRAKE

SWITCH

HEATER FAN

SWITCH

LG/G

GAUGE VOLTAGE

STABILIZER

G

B I

G

LG/G

LG/G

TEMP GAUGE & SENDER

FUEL GAUGE & SENDER

GW

HAZARD
SWITCH

G

7

8

LG/P LG/N

PB

B

3

4

12

GR

GW

G

G

TURN SIGNAL

FLASHER

G

B

HAZARD

FLASHER

N

B

LG/P

green

REVERSE LIGHTS

L

LG/N

LG/N

L

B

& SWITCH

(LG/N)

*TS SWITCH

GW

(GW)

(GR)

GNGNGN

GN

GW

GR

GW

GR

GR

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

1975 MGB W/SEQUENTIAL SEAT BELT

GU

GB

G

G

G

G

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

WARNING FROM LATE BENTLEY

sheet 20

ALTERNATOR

+ +

N

W

W

ALTERNATOR WARNING

LAMP

Ind

NY

N

RADIO

WG (WG)

CONNECTION

(WR)

IGNITION

SWITCH

(W)

W

W

(S)

SP

SY

WLG

WLG

WB

WB

W

W

INERTIA
SWITCH

OVERDRIVE

ON - OFF SWITCH

W

TRANSMISSION

INTERLOCK SWITCH

YPYPYRY YW

OVERDRIVE

SOLENOID

W

N

BATTERY

-

HIGH BEAM INDICATOR

B

B

HIGH BEAMS

B

B

LOW BEAMS

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

B

STARTER

STARTER

+

UW

UW

UW

UR

UR

B

HAZARD SWITCH

SPEEDOMETER

B

HEADLIGHT SWITCH

B

FUEL LEVEL

B

OIL PRESSURE

B

TEMPERATURE

RELAY

CIGAR LIGHTER

HEATER CONTROL

HEATER CONTROL

TACHOMETER

HEATER FAN

W/LG

RW

UW

N

N

N

UR

RW

W1W2

C1

C2

N

WN

NN

WN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

N

(P)

RG

RW

2

3

1

U

(U)

(UR)

GAUGE

LAMP

DIMMER

CONTROL

LH DOOR

SWITCH

ANTI RUN-ON

(N)

(PK)

WR

WR

NP

RG

RG

P

P

COURTESY LAMP

VALVE & SWITCH

EGR SERVICE

COUNTER & LAMP

W

N

WN

B

LIGHTER

GK

GK

RG

W

W

N

N

CIGAR

COIL

IGNITION

GW

1

2

4

3 5

6

8

7

G

BALLAST

R
R

R
R

G
G

P
P

WIRE

B

W

W

DISTRIBUTOR

W

R

Left

R

R

Right

R

P

P P

B

B

MARKER LIGHTS

FRONT PARKING &

B

W

WB

RESISTOR

R

R

WU

G

G

G

G

G

G

G

HEATER

INDUCTION

DISTRIBUTOR

G

G

G

TACHOMETER

WR

G

G

G

G

G

GK

HEATER FAN

& DOOR SWITCHES

B

PW

PW

TRUNK LAMP

& SWITCH

PW

PK

NP

NOT USED - LEFT OVER FROM

PG

1974 - 1975 MODELS WITH SEAT
BELT INTERLOCK SYSTEM

YP

G

P

PW

P

P

B

P

P

B

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

R

Left

R

R

R

Right

R

R

R

R

HAZARD
SWITCH

G

7

8

R

LG/P LG/N

3

4

12

GR

GW

SEATBELT WARNING LAMP

WR

B

YP

YN
PG
P

6
5
4

3
2
1

SEATBELT

MODULE

P

HORNS

PB

P

PB

HORN

BUTTON

PB

B

G

SEATBELT BUCKLE

YN

SWITCH

B

WIPER/WASHER

SWITCH

WB

G

3

2

1

SWITCH

GAUGE VOLTAGE

STABILIZER

G

B I

G

TURN SIGNAL

FLASHER

G

B

HAZARD

FLASHER

N

B

LG/P

L

green

REVERSE LIGHTS

& SWITCH

(U/LG)

(G/K)

(R/LG)

(N/LG)

(B)

(LG/B)

G

HEATER FAN MOTOR

GY

LG/G

L

LG/N

(LG/N)

*TS SWITCH

LG/N

B

U/LG

R/LG

N/LG

FUEL PUMP

WIPER MOTOR

G

G

G

G

G

BRAKE FAILURE

LG/B

G

G

G

GP

BRAKE

SWITCH

WASHER MOTOR

GP

GP

SWITCH

GO

GO

HAND BRAKE

WR

LG/G

GO

SWITCH & LAMP

GU

GGO

TEMP GAUGE & SENDER

LG/G

GB

FUEL GAUGE & SENDER

G

GW

G

GW

(GW)

(GR)

GNGNGN

GN

GW

GR

GW

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

1976 MGB W/CAT CONV

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

FROM LATE BENTLEY

sheet 21

ALTERNATOR

+ +

N

W

W

ALTERNATOR WARNING

LAMP

Ind

NY

N

RADIO

WG (WG)

CONNECTION

(WR)

IGNITION

SWITCH

(W)

W

W

(S)

SP

SY

WLG

WLG

WB

WB

W

W

INERTIA
SWITCH

OVERDRIVE

ON - OFF SWITCH

W

TRANSMISSION

INTERLOCK SWITCH

YPYPYRY YW

OVERDRIVE

SOLENOID

W

N

BATTERY

-

HIGH BEAM INDICATOR

B

B

HIGH BEAMS

B

B

LOW BEAMS

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

B

STARTER

STARTER

+

UW

UW

UW

UR

UR

B

HAZARD SWITCH

SPEEDOMETER

B

HEADLIGHT SWITCH

B

FUEL LEVEL

B

OIL PRESSURE

B

TEMPERATURE

RELAY

CIGAR LIGHTER

HEATER CONTROL

HEATER CONTROL

TACHOMETER

HEATER FAN

W/LG

RW

UW

N

N

N

UR

RW

W1W2

C1

C2

N

WN

NN

WN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

N

(P)

RG

RW

2

3

1

U

(U)

(UR)

GAUGE

LAMP

DIMMER

CONTROL

LH DOOR

SWITCH

ANTI RUN-ON

(N)

(PK)

NP

RG

RG

P

P

COURTESY LAMP

VALVE & SWITCH

W

N

B

WN

RG

W

W

N

N

CIGAR

LIGHTER

COIL

IGNITION

BALLAST

WIRE

W

1

3 5

7

R

2

R

4

R
R

G

6

G

8

P
P

R

B

R

Left

R

R

Right

R

R

P

P P

B

B

MARKER LIGHTS

FRONT PARKING &

B

G

G

G

G

G

G

HEATER

INDUCTION

DISTRIBUTOR

G

G

G

TACHOMETER

WR

G

G

G

G

G

GK

HEATER FAN

& DOOR SWITCHES

B

PW

PW

TRUNK LAMP

& SWITCH

PW

PK

NP

NOT USED - LEFT OVER FROM

PG

1974 - 1975 MODELS WITH SEAT
BELT INTERLOCK SYSTEM

YP

G

P

PW

P

P

B

P

P

B

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

R

Left

R

R

R

Right

R

R

R

R

HAZARD
SWITCH

G

7

8

R

LG/P LG/N

3

4

12

GR

GW

SEATBELT WARNING LAMP

WR

B

YP

YN
PG
P

6
5
4

3
2
1

SEATBELT

MODULE

P

HORNS

PB

P

PB

HORN

BUTTON

PB

B

G

SEATBELT BUCKLE

YN

SWITCH

B

WIPER/WASHER

SWITCH

WB

G

3

2

1

SWITCH

GAUGE VOLTAGE

STABILIZER

G

B I

G

TURN SIGNAL

FLASHER

G

B

HAZARD

FLASHER

N

B

LG/P

L

green

REVERSE LIGHTS

& SWITCH

(U/LG)

(G/K)

(R/LG)

(N/LG)

(B)

(LG/B)

G

HEATER FAN MOTOR

GY

LG/G

L

LG/N

(LG/N)

*TS SWITCH

LG/N

B

U/LG

R/LG

N/LG

FUEL PUMP

WIPER MOTOR

G

G

G

G

G

BRAKE FAILURE

LG/B

G

G

G

GP

BRAKE

SWITCH

WASHER MOTOR

GP

GP

SWITCH

GO

GO

HAND BRAKE

WR

LG/G

GO

SWITCH & LAMP

GU

GGO

TEMP GAUGE & SENDER

LG/G

GB

FUEL GAUGE & SENDER

G

GW

G

GW

(GW)

(GR)

GNGNGN

GN

GW

GR

GW

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

1976 MGB W/O CAT CONV

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

FROM LATE BENTLEY

sheet 22

ALTERNATOR

N

BATTERY

-

HIGH BEAMS

LOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

ALTERNATOR WARNING

Ind

+ +

N

N

NY

CONNECTION

STARTER

RELAY

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

B

B

B

UW

UW

UR

UR

B

HAZARD SWITCH

SPEEDOMETER

B

HEADLIGHT SWITCH

B

FUEL LEVEL

B

OIL PRESSURE

B

TEMPERATURE

CIGAR LIGHTER

HEATER CONTROL

HEATER CONTROL

TACHOMETER

HEATER FAN

LAMP

RADIO

N

N

W/LG

UW

UR

RW

W

WG (WG)

W1W2

C1

C2

N

WN

NN

HEADLIGHT

SWITCH

DIMMER &

*

FLASH-TO-PASS

SWITCH

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

WN

(UW)

N

(P)

RG

RW

IGNITION

SWITCH

(WR)

2

3

1

U

(U)

(UR)

GAUGE

LAMP

DIMMER

CONTROL

LH DOOR

SWITCH

W

W

W

(W)

W

W

(S)

SP

SY

WLG

WLG

WB

WB

ANTI RUN-ON

(N)

(PK)

WR

WR

NP

RG

RG

P

P

VALVE & SWITCH

EGR SERVICE

COUNTER & LAMP

W

W

N

**

G

WN

WN

N

COIL

GK

GK

GW

G

BALLAST

WIRE

1

RG

3 5

7

R

2

R

4

R
R

G

6

G

8

P
P

IGNITION

W

W

DISTRIBUTOR

W

RESISTOR

R

W

WB

WU

G

G

G

G

G

HEATER

INDUCTION

DISTRIBUTOR

G

G

G

TACHOMETER

WR

G

G

G

G

G

THERMOSTAT

BG

BG

BG

FANS

COOLING

B

B

B

R

Left

R

R

G

R

G

INERTIA
SWITCH

W

GK

2

HEATER FAN

SWITCH

WIPER/WASHER

SWITCH

(U/LG)

(G/K)

(R/LG)

(N/LG)

(B)

(LG/B)

WB

G

3

1

HEATER FAN MOTOR

GY

CIGAR

LIGHTER

B

P

MARKER LIGHTS

FRONT PARKING &

B

COURTESY LAMP

& DOOR SWITCHES

B

PW

PW

PW

P P

P

P

P

P

TRUNK LAMP

& SWITCH

PW

PK

NP

NOT USED - LEFT OVER FROM

PG

1974 - 1975 MODELS WITH SEAT

P

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

BELT INTERLOCK SYSTEM

YP

G

Right

R

R

R

GAUGE VOLTAGE

STABILIZER

G

B I

G

Left

B

B

R

R

R

Right

R

R

R

HAZARD
SWITCH

G

7

8

R

LG/P LG/N

3

4

12

GR

GW

TURN SIGNAL

FLASHER

G

L

B

LG/N

HAZARD

FLASHER

N

B

LG/N

L

SEATBELT WARNING LAMP

WR

6

B

5

YP

4

SEATBELT

YN

3

PG
P

2
1

MODULE

SEATBELT BUCKLE

YN

SWITCH

P

PB

HORNS

B

P

PB

HORN

BUTTON

PB

LG/P

B

G

B

green

REVERSE LIGHTS

& SWITCH

TRANSMISSION

INTERLOCK SWITCH

W

FUEL PUMP

W

G

LG/G

(LG/N)

*TS SWITCH

U/LG

R/LG

N/LG

OVERDRIVE

ON - OFF SWITCH

Y

Y

SPARK

CONTROL SWITCH

OVERDRIVE SOLENOID

YPY

YR

SPARK ADVANCE

SOLENOID

WIPER MOTOR

G

G

G

G

G

BRAKE FAILURE

LG/B

G

G

G

GP

BRAKE

SWITCH

WASHER MOTOR

GP

GP

SWITCH

GO

GO

HAND BRAKE

WR

LG/G

GO

SWITCH & LAMP

GU

GGO

TEMP GAUGE & SENDER

LG/G

GB

FUEL GAUGE & SENDER

G

GW

G

GW

(GW)

(GR)

GNGNGN

GN

GW

GR

May be a circuit breaker

**

instead of a fuse.

GW

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

1977 MGB W/CAT CONV

FROM LATE BENTLEY

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

sheet 23

ALTERNATOR

N

BATTERY

-

HIGH BEAMS

LOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

ALTERNATOR WARNING

Ind

+ +

N

N

NY

CONNECTION

STARTER

RELAY

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

B

B

B

UW

UW

UR

UR

B

HAZARD SWITCH

SPEEDOMETER

B

HEADLIGHT SWITCH

B

FUEL LEVEL

B

OIL PRESSURE

B

TEMPERATURE

CIGAR LIGHTER

HEATER CONTROL

HEATER CONTROL

TACHOMETER

HEATER FAN

LAMP

RADIO

N

W/LG

UW

UR

RW

W

WG (WG)

W1W2

C1

C2

N

N

N

WN

NN

HEADLIGHT

SWITCH

DIMMER &

*

FLASH-TO-PASS

SWITCH

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

WN

(UW)

N

(P)

RG

RW

IGNITION

SWITCH

(WR)

2

3

1

U

(U)

(UR)

GAUGE

LAMP

DIMMER

CONTROL

LH DOOR

SWITCH

W

W

W

(W)

W

W

(S)

SP

SY

WLG

WLG

WB

WB

ANTI RUN-ON

(N)

(PK)

NP

RG

RG

P

P

VALVE & SWITCH

**

G

WN

COIL

IGNITION

BALLAST

WIRE

W

1

RG

3 5

W

W

N

7

N

R

2

R

4

R
R

G

6

G

8

P
P

R

G

G

G

G

HEATER

INDUCTION

DISTRIBUTOR

G

G

G

TACHOMETER

WR

G

G

G

G

G

THERMOSTAT

BG

BG

BG

FANS

COOLING

B

B

B

R

Left

R

R

G

R

G

INERTIA
SWITCH

W

GK

2

HEATER FAN

SWITCH

WIPER/WASHER

SWITCH

(U/LG)

(G/K)

(R/LG)

(N/LG)

(B)

(LG/B)

WB

G

3

1

HEATER FAN MOTOR

GY

CIGAR

LIGHTER

B

P

MARKER LIGHTS

FRONT PARKING &

B

COURTESY LAMP

& DOOR SWITCHES

B

PW

PW

PW

P P

P

P

P

P

TRUNK LAMP

& SWITCH

PW

PK

NP

NOT USED - LEFT OVER FROM

PG

1974 - 1975 MODELS WITH SEAT

P

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

BELT INTERLOCK SYSTEM

YP

G

Right

R

R

R

GAUGE VOLTAGE

STABILIZER

G

B I

G

Left

B

B

R

R

R

Right

R

R

R

HAZARD
SWITCH

G

7

8

R

LG/P LG/N

3

4

12

GR

GW

TURN SIGNAL

FLASHER

G

L

B

LG/N

HAZARD

FLASHER

N

B

LG/N

L

SEATBELT WARNING LAMP

WR

6

B

5

YP

4

SEATBELT

YN

3

PG
P

2
1

MODULE

SEATBELT BUCKLE

YN

SWITCH

P

PB

HORNS

B

P

PB

HORN

BUTTON

PB

LG/P

B

G

B

green

REVERSE LIGHTS

& SWITCH

TRANSMISSION

INTERLOCK SWITCH

W

FUEL PUMP

W

G

LG/G

(LG/N)

*TS SWITCH

U/LG

R/LG

N/LG

OVERDRIVE

ON - OFF SWITCH

Y

Y

SPARK

CONTROL SWITCH

OVERDRIVE SOLENOID

YPY

YR

SPARK ADVANCE

SOLENOID

WIPER MOTOR

G

G

G

G

G

BRAKE FAILURE

LG/B

G

G

G

GP

BRAKE

SWITCH

WASHER MOTOR

GP

GP

SWITCH

GO

GO

HAND BRAKE

WR

LG/G

GO

SWITCH & LAMP

GU

GGO

TEMP GAUGE & SENDER

LG/G

GB

FUEL GAUGE & SENDER

G

GW

G

GW

(GW)

(GR)

GNGNGN

GN

GW

GR

May be a circuit breaker

**

instead of a fuse.

GW

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

1977 MGB W/O CAT CONV

FROM LATE BENTLEY

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

sheet 24

ALTERNATOR

N

BATTERY

-

HIGH BEAMSLOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

ALTERNATOR WARNING

Ind

Batt

+

NY

N

N

CONNECTION

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

B

UW

UW

UR

UR

RW

RW

RW

RW

RW

B

RW

B

RW

RW

CIGAR LIGHTER

HEATER CONTROL

HEATER CONTROL

OIL PRESSURE

FUEL LEVEL

TEMPERATURE

SPEEDOMETER

CLOCK

LAMP

RADIO

STARTER

RELAY

N

N

WN

W/LG

UW

UR

TACHOMETER

HEATER FAN

HAZARD SWITCH

W

WG (WG)

W1W2

C1

C2

WN

N

NN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RG

RW

RW

RW

RW

RW

N

(P)

RW

IGNITION

SWITCH

(WR)

2

3

1

U

(U)

(UR)

GAUGE

LAMP

DIMMER

CONTROL

LH DOOR

SWITCH

INERTIA

W

W

(W)

W

W

(S)

SP

SY

WLG

WLG

WB

WB

ANTI RUN-ON

(N)

(PK)

WR

WR

IGNITION

RELAY

RG

P

P

THERMOSTAT

BG

BG

P

P

VALVE & SWITCH

EGR SERVICE

COUNTER & LAMP

W

W1

W2

C2

C1

N

WN

**

G

BG

WN
WN

N

N

COIL

GK

GK

GW

G

BALLAST

WIRE

1

RG

3 5

WN

7

B

R

2

R

4

R
R

G

6

G

8

P
P

B

FANS

COOLING

B

B

MARKER LIGHTS

FRONT PARKING &

B

IGNITION

W

W

DISTRIBUTOR

WN

RESISTOR

R

R

Left

R

R

Right

R

W

WB

WU

R

DISTRIBUTOR

G

G

G

G

G

G

G

G

G

G

TACHOMETER

WR

G

G

G

G

CLOCK

CIGAR

B

LIGHTER

COURTESY LAMP

& DOOR SWITCHES

B

PW

TRUNK LAMP

NP

PK

& SWITCH

PW

PW

PW

P

NOT USED - LEFT OVER FROM

PG

1974 - 1975 MODELS WITH SEAT
BELT INTERLOCK SYSTEM

YP

G

P P

P

R

R

P

B

P

P

B

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

Left

R

R

R

Right

R

R

R

HAZARD
SWITCH

G

7

8

R

LG/P LG/N

3

4

12

GR

SWITCH

2

HEATER FAN

SWITCH

GAUGE VOLTAGE

G

TURN SIGNAL

G

GW

HAZARD

FLASHER

N

W

WIPER/WASHER

SWITCH

(U/LG)

(G)

(R/LG)

(N/LG)

(B)

(LG/B)

WB

G

G

3

1

HEATER FAN MOTOR

GN

GY

STABILIZER

B I

FLASHER

L

LG/N

LG/N

L

B

SEATBELT WARNING LAMP

WR

6

B

5

YP

4

SEATBELT

YN

3

PG
P

2
1

MODULE

SEATBELT BUCKLE

YN

SWITCH

P

HORN

BUTTON

B

PB

HORNS

B

LG/P

PB

G

B

REVERSE LIGHTS

B

green

& SWITCH

TRANSMISSION

INTERLOCK SWITCH

FUEL PUMP

W

G

LG/G

(LG/N)

*TS SWITCH

U/LG

R/LG

N/LG

OVERDRIVE

ON - OFF SWITCH

YYPWN

Y

SPARK

CONTROL SWITCH

OVERDRIVE SOLENOID

YPY

YR

SPARK ADVANCE

SOLENOID

WIPER MOTOR

G

G

G

G

G

BRAKE FAILURE

LG/B

G

G

G

GP

BRAKE

SWITCH

WASHER MOTOR

G

GP

GP

INDUCTION

HEATER

BRAKE
LIGHTS

SWITCH

GO

GO

HAND BRAKE

WR

LG/G

GO

SWITCH & LAMP

GU

GGO

TEMP GAUGE & SENDER

LG/G

GB

FUEL GAUGE & SENDER

G

GW

G

GW

(GW)

(GR)

GNGNGN

GN

GW

GR

May be a circuit breaker

**

instead of a fuse.

GW

GW

GR

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

1978 & LATER MGB

FROM BENTLEY

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

sheet 25

NB

W

W

W

YRYW

YP

-

F + B+

REGULATOR

-

+

-

BATTERIES

UW

HIGH BEAM INDICATOR

B

B

HIGH BEAMS

B

B

LOW BEAMS

UW

UR

F

NG

NY

STARTER

+

“FLASH-TO-PASS

*

SWITCH”

UW

UR

Ind

-

+

N

ALTERNATOR

UW

ALTERNATOR

WARNING LAMP

IGNITION

SWITCH

N

W

2

1

3

N

WR

N

FUEL PUMP

W

RADIO

TACHOMETER

WB

W

G

IGNITION

COIL

OVERDRIVE

ON - OFF SWITCH

WIPER

SWITCH

7

5

3

1

TRANSMISSION

INTERLOCK SWITCH

8

6

4

2

U/LG

R/LG

N/LG

DISTRIBUTOR

N

B

G

OVERDRIVE

SOLENOID

WIPER MOTOR

G

CIGAR

N

N

N

FUSE BOX

1 2

3

N

5

7

R

R

SWITCH

N

4

6

8

U

W

HEADLIGHT

W

3

W

W

N

N
N

4

21

R

R

LIGHTER

G

G

G

G

P

P

G

G

B I

G

G

G

LG/G

HEATER FAN

SWITCH

HEATER FAN

GNGN

GB

B

FUEL GAUGE & SENDER

R

COURTESY LAMP

B

P

PW

GAUGE VOLTAGE

STABILIZER

GW

G

RH FRONT

B

& DOOR SWITCHES

R

B

PW

PW

PB

HORN

BUTTON

TURN SIGNAL

(GW)

GW

GW

FLASHER

G

B

PB

PB

P

HORNS

P

LG/N

L

(LG/N)

*TS SWITCH

(GR)

GR

GR

U

F

UW

1 2

DIMMER

UR

SWITCH

UR

BG

R

B

B

LIGHTS

R

R

FRONT PARKING

GW

GR

GW

GR

G

G

green

green

RH REAR

B

INDICATOR

B

INDICATOR

LH REAR

RH TS

LH TS

B

p
m

d

A PUBLICATION 5 © 200

B

R

R

R

R

COURTESY/MAP

LIGHT/SWITCH

B

B

B

RW

RW

RW

RG

CIGAR LIGHTER

OIL PRESSURE/WATER TEMPERATURE

SPEEDOMETER

RW

RW

R

GAUGE

LAMP

DIMMER

B

B

R

TAIL LIGHTS &

LICENSE PLATE LAMPS

CONTROL

GAUGE & DASH

B

ILLUMINATION LAMPS

B

RW

RW

TACHOMETER

FUEL LEVEL

GBBG

REAR WINDOW DEFROSTER

R

R

R

& SWITCH - GT ONLY

GR

G

GP

BRAKE SWITCH

G

REVERSE LIGHTS

& SWITCH

B

G

GP

GN

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.

*These two switches are combined in one housing

GP

GP

GNGN

GN

MGC - UK MARKET

LH FRONT

B

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

FROM BENTLEY

sheet 26

-

F + B+

REGULATOR

+

-

BATTERIES

†OVERDRIVE

NB

Ind

F+

+

NG

N

ALTERNATOR

NY

N

ALTERNATOR WARNING

N

N

LAMP

W

N

3

1

WR

W

2

IGNITION

SWITCH

W

W

W

ON - OFF SWITCH

W

W

W

TRANSMISSION

INTERLOCK SWITCH

YR

YPY

TACHOMETER

W

G

OVERDRIVE

SOLENOID

W

IGNITION

COIL

W

FUEL PUMP

W

WB

†WIPER/WASHER

SWITCH

(U/LG)

(G)

(R/LG)

(N/LG)

(B)

(LG/B)

U/LG

G

R/LG

N/LG

WIPER MOTOR

G

LG/B

WASHER MOTOR

G

DISTRIBUTOR

WR

-

FUSE BOX

+

STARTER

HEADLIGHT

SWITCH

N

3

4

R

R

2

1

U

W

W

W

N

N

N

4

132

W

WB

GAUGE VOLTAGE

STABILIZER

G

B I

G

G

LG/G

G

2

1

HEATER FAN

SWITCH

P

4

3

GYGN

HEATER FAN MOTOR

G

LG/G

TEMP GAUGE & SENDER

LG/G

OIL PRESSURE GAGE & SENDER

FUEL GAUGE & SENDER

GP

GU

WN

GB

B

B

B

GP

HIGH BEAM INDICATOR

B

B

HIGH BEAMSLOW BEAMS

B

B

B

B

B

GAUGE & DASH

ILLUMINATION LAMPS

B

UW

UW

UW

UR

UR

TACHOMETER

FUEL LEVEL

B

OIL PRESSURE

WATER TEMPERATURE

UW

UR

GAUGE

SWITCH

RW

CIGAR LIGHTER

SPEEDOMETER

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

R

LAMP

RW

RW

RW

RW

RW

RW

(P)

RW

RW

B

R

(U)

BW

BRAKE FAILURE
SWITCH & LAMP

CIGAR

LIGHTER

B

B

COURTESY LAMP

& DOOR SWITCHES

PW

PW

PB

*HORN

B

R

R

(UR)

R

B

B

LIGHTS

FRONT PARKING

B

B

TAIL LIGHTS &

R

R

R

R

R

R

R

R

R

R

R

R

R

LICENSE PLATE LAMPS

R

BUTTON

R

RG

B

COURTESY LAMP

RADIO

P

WG

WG

TURN SIGNAL

GW

LG/N

G

G

FLASHER

B

G

L

LG/N

(LG/N)

PW

P

HAZARD
SWITCH

GR

3

6

5

2

4

1

HAZARD

FLASHER

PB

PB

P

HORNS

P

N

G

L

B

P

LG/P

LG/N

*TS SWITCH

B

red

REVERSE LIGHTS

& SWITCH

BRAKE SWITCH

4

3

WB

2

1

(GW)

(GR)

RN

REAR WINDOW DEFROSTER

WB

& SWITCH - GT ONLY

GW

GW

GW

GW

GR

GR

GR

GNGNGN

GN

GW

GW

GR

GR

RN

GW

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate /three

MGC - US MARKET

WB

G

G

G

G

green

green

GP

RH FRONT

RH REAR

B

INDICATOR

B

INDICATOR

LH REAR

LH FRONT

RH TS

LH TS

B

p
m

d

A PUBLICATION 5 © 200

B

B

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

B

B

advance

AUTO-WIRE

FROM BENTLEY

sheet 27

ALTERNATOR

N

+

BATTERIES

-

†OVERDRIVE

W

Ind

+

N

ALTERNATOR WARNING

STARTER

RELAY

N

N

WN

LAMP

W2

W1

WR

N

NY

N

C1

C2

WN

IGNITION

SWITCH

WG

WR

W

W

3

5

2

1

N

W

W

-

ON - OFF SWITCH

W

W

W

BALLAST

WG

TRANSMISSION

INTERLOCK SWITCH

Y

W/LG

WU

WB

IGNITION

COIL

GK

YPY

DISTRIBUTOR

FUSE BOX

R

1

2

R

4

3

G

5

6

P

8

7

P

+

STARTER

HEADLIGHT

SWITCH

RG

W

RG

3

N

2

1

U

W

N

N

OVERDRIVE

SOLENOID

WB

R

FUEL PUMP

W

G

G

TACHOMETER

†WIPER/WASHER

SWITCH

(U/LG)

(GK)

(R/LG)

(N/LG)

(B)

(LG/B)

GK

GK

GK

GK

HEATER FAN

G

BRAKE SWITCH

3

2

SWITCH

U/LG

GK

R/LG

N/LG

WIPER MOTOR

GK

WASHER MOTOR

LG/B

GK

RADIO

GY

HEATER FAN MOTOR

GP

GP

GP

HIGH BEAM INDICATOR

B

B

HIGH BEAMSLOW BEAMS

B

B

B

RW

B

RW

GAUGE & DASH

ILLUMINATION LAMPS

B

RW

UW

UW

UW

UR

UR

UW

UR

GAUGE

LAMP

DIMMER

CONTROL

CIGAR LIGHTER

B

OIL PRESSURE/WATER TEMPERATURE

FUEL LEVEL

RW

TACHOMETER

RW

SPEEDOMETER

(P)

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RG

RG

RW

RW

P

CIGAR

(U)

(UR)

COURTESY LAMP

B

B

LIGHTER

P

PW

P

P

P

P

& DOOR SWITCHES

PW

PW

B

PW

P

HATCH

B

LIGHTS

B

FRONT PARKING

B

B

TAIL LIGHTS &

LICENSE PLATE LAMPS

LAMP & SWITCH

PW

PB

B

HORN

BUTTON

PB

PB

P

HORNS

P

FANS

COOLING

R

Left

Right

R

R

R

R

R

Left

Right

BG

R

GG

GAUGE VOLTAGE

STABILIZER

B I

G

LG/G

LG/G

B

GB

B

FUEL GAUGE & SENDER

G

G

RN

R

2

G

R

3

HAZARD
SWITCH

R

G

7

8

LG/N

3

4

12

GR

GW

REAR WINDOW

DEFROSTER & SWITCH

TURN SIGNAL

FLASHER

G

L

B

LG/N

WB

(GW)

(LG/N)

HAZARD

C2

C1

W1

BOBG

TEMP

FLASHER

N

B

G

L

SWITCH

*TS SWITCH

LG/N

REVERSE LIGHTS

(GR)

& SWITCH

B

GW

G

GW

G

GW

GW

GW

GR

GR

GR

GNGNGN

GN

GW

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate

RH FRONT

RH REAR

B

B

INDICATOR

INDICATOR

green

green

LH REAR

LH FRONT

MGBGTV8

B

B

RH TS

LH TS

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

FROM BENTLEY

sheet 28

ALTERNATOR

Batt +

N

ALTERNATOR WARNING

W

Ind

+

NY

NN

STARTER

RELAY

N

N

WN

W1

W2

C1

N

N

N

NN

LAMP

YPYRYW

WR

IGNITION

C2

SWITCH

WN

3

1

N

5

2

WG

N

N N

W

W

GKWG

FUEL PUMP

W

WB

WB

IGNITION

TACHOMETER

G

COIL

DISTRIBUTOR

OVERDRIVE

ON - OFF SWITCH

WIPER

SWITCH

1

2

3

4

5

GK

GK

GK

GK

U/LG

GK

R/LG

N/LG

TRANSMISSION

INTERLOCK SWITCH

WIPER MOTOR

GK

GK

OVERDRIVE

SOLENOID

-

+

-

BATTERIES

HIGH BEAM INDICATOR

B

B

HIGH BEAMSLOW BEAMS

B

B

B

B

B

GAUGE & DASH

B

ILLUMINATION LAMPS

B

STARTER

+

UW

UW

UW

UR

UR

CIGAR LIGHTER

OIL PRESSURE/WATER TEMPERATURE

SPEEDOMETER

TACHOMETER

FUEL LEVEL

UW

UR

N

HEADLIGHT

SWITCH

(P)

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RW

RW

RW

RW

CONTROL

RW

RW

RG

3

2

1

U

(U)

GAUGE

LAMP

DIMMER

(UR)

RG

P

RG

1

3

W

5

W

N

7

N

R

2

R

R

4

R

G

6

G

P

8

P

3

2

1

HEATER FAN

SWITCH

GY

HEATER FAN

G

GP

GP

RADIO

MOTOR

GP

BRAKE

CIGAR

LIGHTER

B

P

P

R

BRAKE SWITCH

G

GN

GN

LIGHTS

GP

GN

REVERSE

G

G

G

G

LIGHTS

green

green

GN

GB

RH FRONT

RH REAR

B

B

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

B

PW

PW

PW

COURTESY LAMP

B

LIGHTS

B

FRONT PARKING

& DOOR SWITCHES

P P

B

GT

TRUNK OR HATCH

B

PW

B

RG

LAMP & SWITCH

P

Roadster

PW

B

P

TAIL LIGHTS &

LICENSE PLATE LAMPS

PB

R

Left

Right

R

R

R

R

R

Left

Right

R

G

B I

G

LG/G

GAUGE VOLTAGE

G

R

R

R

G

G

G

HAZARD
SWITCH

G

8

6

4

TURN SIGNAL

FLASHER

G

7

5

LG/N

3

12

GR

GW

B

STABILIZER

L

LG/N

(LG/N)

HAZARD

FLASHER

N

B

L

LG/N

*TS SWITCH

REVERSE SWITCH

LG/G

(GW)

(GR)

GW

GR

FUEL GAUGE & SENDER

GW

GW

GR

GR

HORN

B

BUTTON

HORNS

PBPP

REAR WINDOW

DEFROSTER SWITCH

RN

2

WB

3

REAR WINDOW DEFROSTER

& INDICATOR (GT only)

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

73/74 UK MARKET MGB

FROM HAYNES

sheet 29

ALTERNATOR

N

+

BATTERIES

-

HIGH BEAMSLOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

batt

N

Ind

+

NN

ALTERNATOR WARNING

NY

-

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

B

B

B

UW

UW

UR

UR

B

HAZARD SWITCH

B

HEADLIGHT SWITCH

B

FUEL LEVEL

TACHOMETER

B

HEATER FAN

B

OIL PRESSURE

CIGAR LIGHTER

SPEEDOMETER

HEATER CONTROL

TEMPERATURE

HEATER CONTROL

LAMP

N

N

WN

UW

UR

GAUGE

LAMP

DIMMER

CONTROL

RW

RW

W

STARTER

RELAY

W2

C1

C2

W1

WNYK

N

NN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

N

(P)

RG

RW

IGNITION

SWITCH

(WG)

(WR)

2

3

1

U

(U)

LH DOOR

SWITCH

(UR)

†OVERDRIVE

ON - OFF SWITCH

W

(W)

(S)

(N)

(PK)

W

W

SP

SY

ANTI RUN-ON

VALVE & SWITCH

TRANSMISSION

INTERLOCK SWITCH

YPYYY

OVERDRIVE

SOLENOID

W

FUEL PUMP

W

WB

WB

†WIPER/WASHER

SWITCH

(U/LG)

(GK)

(R/LG)

(N/LG)

(B)

(LG/B)

U/LG

GK

R/LG

N/LG

WIPER MOTOR

GK

LG/B

GK

WASHER MOTOR

IGNITION

COIL

WR

DISTRIBUTOR

RADIO

N

RG

RG

RG

P
P

NP

B

BW
BW

LIGHTER

B

B

COURTESY LAMP

PK

PG

NP

BUZZER

& DOOR SWITCHES

NP

NP

DRIVER

PSNGR

NP

YK

WR

YO

PG

B

B

1 2

4

7

10

YU

PW

PW

PW

YU

YG

5 6

8 9

11 12

YN

SEATBELT

MODULE

FUSE BOX

RG

3

W

W

5

N

N

7

N

P

BRAKE FAILURE

& TEST SWITCH

& LAMP

CIGAR

TRUNK/HATCH

LAMP & SWITCH

P

PW

SEAT SWITCHES

G

NP

SEATBELT

WARNING LAMP

3

B

PSNGR

YW

YG

DRIVER

R

1

2

R

R

4

R

G

G

6

G

P

8

P

PW

P

G

G

R

B

P

P

P

P

B

B

MARKER LIGHTS

FRONT PARKING &

B

R

Left

R

R

Right

R

R

GAUGE VOLTAGE

STABILIZER

R

R

GG

G

G

G

WB

3

2

WB

B I

G

REAR WINDOW DEFROSTER

& SWITCH - GT ONLY

WB

G

TACHOMETER

LG/G

2

SWITCH

HEATER FAN

RN

WB

Left

P

P

P

P

YP

B

B

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

P

HORNS

SEATBELT BUCKLE

SWITCHES

YO

G

R

R

HAZARD

R

R

R

Right

R

R

PB

PB

PB

P

HORN

BUTTON

B

SWITCH

G

5

6

LG/P

LG/P LG/N

3

4

12

GR

GW

TURN SIGNAL

FLASHER

G

B

HAZARD

FLASHER

N

B

LG/N

L

LG/P

L

LG/N

(LG/N)

*TS SWITCH

B

REVERSE LIGHTS

& SWITCH

GEARBOX SWITCH

HEATER FAN MOTOR

GK

3

G

BRAKE SWITCH

LG/G

LG/G

(GW)

(GR)

GW

GW

GR

GR

GNGNGNG

GN

GY

GP

GP

GP

GU

TEMP GAUGE & SENDER

GB

B

FUEL GAUGE & SENDER

p

B

GW

GW

G

GW

G

GW

GR

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate

green

green

RH FRONT

RH REAR

RH TS

B

INDICATOR

LH TS

B

INDICATOR

LH REAR

LH FRONT

B

B

B

B

m
d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

73/74 US MARKET MGB

FROM HAYNES

sheet 30

ALTERNATOR

BATTERY

-

HIGH BEAMSLOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

IndBatt +

+

NY

N

CONNECTION

NN

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

UW

UW

UR

UR

B

OIL PRESSURE/WATER TEMPERATURE

B

RADIO

STARTER

RELAY

N

N

WN

W/LG

UW

UR

CIGAR LIGHTER

SPEEDOMETER

FUEL LEVEL

TACHOMETER

ALTERNATOR WARNING

W

W1

W2

C1

N

N

N

NN

LAMP

IGNITION

C2

SWITCH

WN

N

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RG

RW

RW

RW

RW

RW

RW

WG

5

WR

1 2

RG

3

2

1

U

(U)(P)

(UR)

GAUGE

LAMP

DIMMER

CONTROL

YPYRYW

3

W

W

FUEL PUMP

WLG

WLG

WB

WB

†OVERDRIVE

ON - OFF SWITCH

TRANSMISSION

INTERLOCK SWITCH

OVERDRIVE

SOLENOID

†WIPER/WASHER

G

B I

SWITCH

(U/LG)

(G)

(R/LG)

(N/LG)

(B)

(LG/B)

TACHOMETER

G

G

3

2

1

HEATER FAN

SWITCH

LG/G

U/LG

G

R/LG

N/LG

G

G

G

BRAKE SWITCH

G

REVERSE SWITCH

G

GY

GY

LG/G

N

COIL

BALLAST

W

RG

P

W

WN
WN

N

N

RG

1

3

5

7

R

2

R

R

4

R

G

6

G

P

8

P

IGNITION

R

DISTRIBUTOR

G

G

G

G

G

G

G

G

CIGAR

LIGHTER

B

B

PW

PW

PW

P

B

LIGHTS

B

FRONT PARKING

R

Left

Right

R

R

R

COURTESY LAMP

& DOOR SWITCHES

B

R

R

GAUGE VOLTAGE

STABILIZER

Left

R

R

Right

R

HAZARD
SWITCH

R

G

7

8

5

6

3

4

12

GR

GW

LG/N

TURN SIGNAL

FLASHER

G

L

B

LG/N

(GW)

(LG/N)

HAZARD

FLASHER

N

3

2

L

B

LG/N

*TS SWITCH

(GR)

B

HORN

BUTTON

B

B

HORNS

GT

PW

PW

PB

PB

P

P

TRUNK OR HATCH

LAMP & SWITCH

P

Roadster

P

B

TAIL LIGHTS &

LICENSE PLATE LAMPS

P

P

REAR WINDOW

DEFROSTER SWITCH

& RELAY

W2

W1

C2

C1

P

RN

WB

REAR WINDOW DEFROSTER

& INDICATOR (GT only)

GP

GW

GR

WIPER MOTOR

LG/B

G

GP

BRAKE

LIGHTS

REVERSE

LIGHTS

HEATER FAN

MOTOR

GB

FUEL GAUGE & SENDER

G

GW

GW

GR

GR

G

G

G

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* and two switches combined in one housing† indicate

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

WASHER MOTOR

GP

GP

GNGNGN

GN

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

75/76 UK MARKET MGB

FROM HAYNES

sheet 31

ALTERNATOR

N

BATTERY

-

HIGH BEAMSLOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

ALTERNATOR WARNING

Ind

+ +

N

NY

CONNECTION

NN

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

B

UW

UW

UR

UR

RW

RW

RW

RW

RW

B

RW

B

RW

RW

CIGAR LIGHTER

HEATER CONTROL

HEATER CONTROL

OIL PRESSURE

FUEL LEVEL

TEMPERATURE

SPEEDOMETER

CLOCK

LAMP

RADIO

STARTER

RELAY

N

N

WN

W/LG

UW

UR

TACHOMETER

HEATER FAN

HAZARD SWITCH

W

WG (WG)

W1W2

C1

C2

N

WN

N

NN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RG

RW

RW

RW

RW

RW

N

(P)

RW

IGNITION

SWITCH

(WR)

3

RG

2

1

U

(U)

(UR)

GAUGE

LAMP

DIMMER

CONTROL

LH DOOR

SWITCH

INERTIA

W

W

(W)

W

W

(S)

SP

SY

WLG

WLG

WB

WB

ANTI RUN-ON

(N)

(PK)

WR

WR

IGNITION

RELAY

RG

P

P

THERMOSTAT

BG

BG

P

P

VALVE & SWITCH

EGR SERVICE

COUNTER & LAMP

W

W1

W2

C2

C1

N

WN

G

**

BG

WN
WN

N

N

COIL

GK

GK

GW

G

BALLAST

WIRE

1

RG

3 5

WN

7

B

R

2

R

4

R
R

G

6

G

8

P
P

B

FANS

COOLING

B

B

MARKER LIGHTS

FRONT PARKING &

B

IGNITION

W

W

DISTRIBUTOR

WN

RESISTOR

R

R

Left

R

R

Right

R

W

WB

WU

R

DISTRIBUTOR

G

G

G

G

G

G

G

G

G

G

TACHOMETER

WR

G

G

G

G

CLOCK

CIGAR

B

LIGHTER

COURTESY LAMP

& DOOR SWITCHES

B

PW

PK

PG

TRUNK LAMP

& SWITCH

PW

YP

PW

PW

P

G

P P

P

R

R

P

B

P

P

B

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

Left

R

R

R

Right

R

R

R

HAZARD
SWITCH

G

7

8

R

LG/P LG/N

3

4

12

GR

SWITCH

2

HEATER FAN

SWITCH

GAUGE VOLTAGE

G

TURN SIGNAL

G

GW

HAZARD

FLASHER

N

W

WIPER/WASHER

SWITCH

(U/LG)

(G)

(R/LG)

(N/LG)

(B)

(LG/B)

WB

G

G

3

1

HEATER FAN MOTOR

GN

GY

STABILIZER

B I

FLASHER

L

LG/N

LG/N

L

B

SEATBELT WARNING LAMP

WR

6

B

5

YP

4

SEATBELT

YN

3

PG
P

2
1

MODULE

SEATBELT BUCKLE

YN

SWITCH

P

HORN

BUTTON

B

PB

HORNS

B

LG/P

PB

G

B

REVERSE LIGHTS

B

green

& SWITCH

TRANSMISSION

INTERLOCK SWITCH

FUEL PUMP

W

G

LG/G

(LG/N)

*TS SWITCH

U/LG

R/LG

N/LG

OVERDRIVE

ON - OFF SWITCH

YYPWN

Y

SPARK

CONTROL SWITCH

OVERDRIVE SOLENOID

YPY

YB

SPARK ADVANCE

SOLENOID

WIPER MOTOR

G

G

G

G

G

BRAKE FAILURE

LG/B

G

G

G

GP

BRAKE

SWITCH

WASHER MOTOR

G

GP

GP

INDUCTION

HEATER

SWITCH

GO

GO

HAND BRAKE

WR

LG/G

GO

SWITCH & LAMP

GU

GGO

TEMP GAUGE & SENDER

LG/G

GB

FUEL GAUGE & SENDER

G

GW

G

GW

(GW)

(GR)

GNGNGN

GN

GW

GR

May be a circuit breaker

**

instead of a fuse.

GW

GW

GR

GR

G

GR

G

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

LATE US MARKET MGB

FROM HAYNES

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

sheet 32

ALTERNATOR

N

BATTERY

-

HIGH BEAMSLOW BEAMS

GAUGE & DASH

ILLUMINATION LAMPS

ALTERNATOR WARNING

Ind

+ +

N

NY

CONNECTION

NN

STARTER

+

UW

HIGH BEAM INDICATOR

B

B

B

B

B

B

B

B

B

B

B

UW

UW

UR

UR

TACHOMETER

OIL PRESSURE

SPEEDOMETER

FUEL LEVEL

TEMPERATURE

HEATER CONTROL

HEATER CONTROL

CLOCK

REAR WINDOW DEFROST

COURTESY LAMP

HEATER FAN

CIGAR LIGHTER

HAZARD SWITCH

LAMP

RADIO

STARTER

RELAY

N

N

WR

W/LG

UW

UR

W

WR

WG (WG)

W1W2

C1

C2

WR

N

N

NN

HEADLIGHT

SWITCH

(UW)

DIMMER &

*

FLASH-TO-PASS

SWITCH

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RG

RW

N

(P)

RW

IGNITION

SWITCH

(WR)

2

3

1

U

(U)

(UR)

GAUGE

LAMP

DIMMER

CONTROL

(W)

W

W

WLG

WLG

WB

WB

FUEL PUMP

OVERDRIVE

ON - OFF SWITCH

TRANSMISSION

INTERLOCK SWITCH

OVERDRIVE

SOLENOID

YPYYYWN

WIPER/WASHER

(N)

W

W1

IGNITION

RELAY

RG

RG

P

W2

C2

C1

N

WN

RG

1

3

WN

WN

G

**

WN

N

N

5

7

R

2

R

R

4

R

G

6

G

P

8

P

W

THERMOSTAT

COIL

IGNITION

R

DISTRIBUTOR

G

G

G

G

COOLING

CLOCK

LIGHTER

FAN

CIGAR

Left

B

MARKER LIGHTS

FRONT PARKING &

P

P

B

R

Right

R

R

SWITCH

HEATER FAN

R

BG

BG

B

B

COURTESY LAMP

& DOOR SWITCHES

PW

P

B

B

PW

B

PW

PW

PW

GT

TRUNK OR HATCH

LAMP & SWITCH

P

Roadster

PW

P

P

B

B

TAIL, REAR MARKER, &

LICENSE PLATE LAMPS

R

Left

R

R

Right

R

R

HAZARD
SWITCH

G

7

8

5

6

R

LG/P LG/N

3

4

12

GR

GW

G

HAZARD

FLASHER

YP

G

N

SEATBELT WARNING LAMP

WR

6

B

5

YP

4

SEATBELT

YN

3

MODULE

2

P

1

SEATBELT BUCKLE

YN

SWITCH

P

HORN

BUTTON

B

PB

REVERSE LIGHTS & SWITCH

WB

WB

HORNS

B

G

PB

B

2

3

REAR WINDOW DEFROSTER,

SWITCH, & INDICATOR

SWITCH

(U/LG)

(G)

(R/LG)

(N/LG)

(B)

(LG/B)

TACHOMETER

G

HEATER FAN MOTOR

3

1

B I

GY

GN

2

G

GAUGE VOLTAGE

STABILIZER

TURN SIGNAL

FLASHER

L

LG/N

LG/N

L

B

WB

G

LG/G

(LG/N)

*TS SWITCH

WIPER MOTOR

U/LG

R/LG

N/LG

G

G

G

G

G

LG/B

G

BRAKE

SWITCH

WASHER MOTOR

BRAKE

LIGHTS

HAND BRAKE

WARNING LAMP

GO

HAND BRAKE

WR

GO

LG/G

SWITCH

GO

GU

G

TEMP GAUGE & SENDER

LG/G

GB

FUEL GAUGE & SENDER

GW

GW

(GW)

(GR)

GNGNGN

GN

GW

GR

GW

GR

GR

GR

COLOR CODES
N Brown LG Light Green G Green
U Blue W White B Black
R Red Y Yellow K Pink
P Purple S Slate O Orange
Wire colors shown in ( ) are supplied as part of the
component they are connected to.
= one pin of a multi pin connector.
* two switches combined in one housingindicates

RH FRONT

RH REAR

B

green

B

green

LH REAR

LH FRONT

B

B

B

RH TS

INDICATOR

LH TS

INDICATOR

B

B

p
m

d

A PUBLICATION 5 © 200

www.advanceautowire.com

May be reproduced for personal, non-commercial use only

advance

AUTO-WIRE

LATE UK MARKET MGB

May be a circuit breaker

**

instead of a fuse.

FROM HAYNES

sheet 33