Peterbilt 387 EWD wiring diagrams

Model 387 Schematics (01 of 59)

SK30218

A

01

TRAILER LOAD

CENTER

MEGA FUSES

SCALE 1:20

SLEEPER LOAD

CENTER

SLEEPER

OPTIONAL EXPANSION

CHASSIS

LOAD CENTER

CAB OPTIONAL SCALE 1:20 EXPANSION

(BEHIND GLOVEBOX)

SH

NO. TITLE

1)INDEX SYMBOL KEY

2)HARNESS FLOWCHART

3)+12V POWER DISTRIBUTION

4)NEGATIVE POWER DISTRIBUTION

5)+12V POWER DISTRIBUTION (OPTIONAL DISCONNECT)

6)WIPER/WASHER

7)HORN

8)MANUALFAN CONTROL

9)HVAC CUMMINS/CATERPILLAR

10)TURN SIGNAL/STOP/HAZARDS/AUX TRAILER

11)REVERSE LAMPS

12)MARKER LAMPS

13)HEAD LAMP/DRL

14)FOG LAMPS

15)FUELHEATER

16)AIR DRYER

17)INTERFACE MODULE

18)SPOTLAMPS

19)LOAD LAMPS

BRACKET MOUNTED/FLUSH MOUNTED/

MUTIPLE/COIL 10’

20)FLUORESCENTLAMP SLEEPER

21)FLOOR LAMP

22)ETHER START CATERPILLAR

23)WINDOWLIFT

24)CENTRALDOOR LOCKS

25)DOOR LAMPS/DOME LAMPS

26)PREMIUM SOUND

27)SLEEPER TOOL BOX LAMPS

28)SLEEPER CLOCK

29)AUX FAN

30)SLEEPER READING LAMPS

31)REFRIGERATOR UNIT REFER

32)SLEEPER POWER ACCESS OUTLETS

33)SLEEPER FLOOR LAMP

34)SLEEPER HVAC

35)DIGITALMESSAGE CENTER

36)ABS LOW

37)ABS HI

38)CAB CIGAR LIGHTER PWR COMM

39)SPARE SWITCHES

40)TWO SPEED/INTER/FIFTH WHEEL/DIFFLOCK/PTO

41)LOWCOOLANT

42)EATON TOP 2TRANSMISSION

43)MIRROR CONTROL/HEATER

44)ENGINE BRAKE/CRUISE CONTROL/DIAGNOSTIC

45)RADIO

46)SPARE POWER/SYSTEM SLEEPER

47)CATERPILLAR CUMMINS ENGINE ECU/TPS/

SPEED SENSOR/INTERUPT/WARNING LAMPS

48)SMC SPEEDO MESSAGE CENTER

49)DATA LINK

50)CAB SPARE POWER/SYSTEM EXPANSION

51)CB RADIO

52)BACKLIGHTING +12VOLTS

53)NEGATIVE SWITCH LINKS

54)SPLICE LOCATION - DISTRIBUTION

55)SPLICE LOCATION - DISTRIBUTION

56)ASH TRAY

57)CAB/CHASSIS HARNESS LAYOUT

58)SLEEPER HARNESS LAYOUT

59)FUELHOT LINE

CAB

LOAD CENTER (BEHIND GLOVEBOX)

SYMBOL/ABBREVIATION KEY

1)STUD

S1

2)SPLICE

3)RING TERMINAL CONNECTORS

4) NUMBERS EX CIRCUITDESCRIPTION		SUFFIX	ALPHA
286	-1	A

FOR CIRCUITNUMBER FUNCTION SEE SK06520

5)RED SOLID COLORS

RED/BLACK SOLID COLOR WITH STRIPE

SOLID/STRIPE

6)BUSS BAR

7)1 CONNECTOR APPEARS ON MULTIPLE SHEETS

8)CLC	CHASSIS LOAD CENTER
9)SLPR	SLEEPER

10)TRLR TRAILER

11)MULTI CORE CABLE

12)CONTINUED TO OTHER SH XX

13)	MOMENTARY CONTACT	SHEETNUMBER

CONTACT SWITCH

14)BULB

NA NA

PD8A3417.FRM

Model 387 Schematics (02 of 59)					SK30218			A	02
				BAT +
				MEGA FUSE	HOTLINE	HOTLINE		HOTLINE
				ASSY	POWER	CHASSIS		CAB
						(HARNESS)		(HARNESS)
		ABS (HARNESS)	ABS (HARNESS)
TRAILER		CAB	CHASSIS
(HARNESS)					W/L BAR	INSTRUMENTS
LOAD					37WAY
CENTER
	CHASSIS
	(HARNESS)			CAB (PC)				SLEEPER (PC)
	LOAD
	CENTER			LOAD				LOAD
TRAILER				CENTER				CENTER
CABLES
						HEADER
						(HARNESS)
HOOD	CHASSIS	COWL	ENGINE					SLEEPER
								(HARNESS)
(HARNESS)	(HARNESS)	(HARNESS)	(HARNESS)
				CAB	DOOR
				(HARNESS)	CONTROL		LOAD
					(HARNESS)		LIGHT
						(HARNESS)
STOP L/P	SIDE REPEATER		DASH
(HARNESS)			ENGINE
	(HARNESS)		HARNESS		LH DOOR
					(HARNESS)
				DATA
				LINK
			RADIO
			HARNESS		RH DOOR
					(HARNESS)
			MIRROR	MESSAGE
			GLARE	CENTER	SMC (SPEEDO
			STOPPER
HARNESS FLOW CHART					MESSAGE
					CENTER
					HARNESS)
								PD8b3417.frm

Model 387 Schematics (03 of 59)

SK30218

A

03

31-1 , RED

ENG9

B+

ENG8

RED

+

G

ALTERNATOR

RED

S

-

STARTER

-

W/L

D+

+

-

B-

+

150A

150A

100A

100A

MEGA

FUSES

-

+

RED(NOT WITH BATTERY DISCONNECT)

RED

1,

RED

BATTERIES

ORANGE

ORANGE

ORANGE

ORANGE

BDC-4

BDC-3

D

86

E

B

B

239-1 ,

BLACK

30

R

A

298-1 ,

ORANGE

,

A

SH 57

1

87

CHASSIS

TRLR2

OPTIONAL

85

BATTERY

LOAD CENTER

7

9

DISCONNECT

1

SOLENOID

1

2

3

REAR

2B 3

298-4 , ORANGE

BATTERY

1

BOX ONLY

CAB

ORANGE

239-4 , BLACK

5B 6

LOAD CENTER

7.5A

4

FIREWALL

LOCATION BATTERY BOX

SH 2

8 10

298-2 , ORANGE 298-3 , ORANGE

CLC8

CAB3

BATTERY

DISCONNECT

BATTERY DISCONNECT OPTION

SWITCH

SLEEPER

239BLACK-2 ,

BLACK,2393-

LOAD CENTER

ORANGE

BDC-1

BDC-2

ORANGE

B

B

S2

239-1 , BLACK

239-1 ,

BLACK

S1

298-1D ORANGE

ORANGE

298-1 , ORANGE A

A

298-1 ,

ORANGE

TRAILER

SLPR28

LOAD CENTER

RED

ORANGE

+12V POWER DISTRIBUTION (OPTIONAL DISCONNECT)

PD8b3417.frm

Model 387 Schematics (04 of 59)

SK30218

A

04

B+

LH

G

CHASSIS

RAIL

+

S

W/L

D+

BLACK

ALTERNATOR

-

B-

ENG6

STARTER

ENG8

+

-

BLACK

BLACK

239-6R,

-

S2

239-7Q ,

BLACK

S1

BLACK

239-8Q , BLACK

239-10J , BLACK

+

ENG11

CYLINDER HEAD STUD

-

+

239-15G ,

BLACK

JUMPER, BLACK

239-17D ,

BLACK

BATTERIES

239-1 , BLACK

SH 5

S2

239-16, BLACK

239-4BB , BLACK

239-1JJ , BLACK

S1

CLC6

CLC4

HOOD8

SH 2

CHASSIS12

239-1NN BLACK

239-2MM,

BLACK

SH 10

BLACK

,

CLC11

S4

D

239-1F ,

S2

239-1LL

239-2KK

BLACK

TRLR3

BLACK

239-3E ,

BLACK

SH 10

CHASSIS2REP1

S2

SPARE

CLC9

239-13G

S1

LH

BLACK

239-7S , BLACK

ENGINE

FIREWALL STUD

S3

S5

CAB

CHASSIS

239-1KK, BLACK

239-15H

RAIL

BLACK

CHASSIS5

SH 53

239-1MM,

BLACK

X1-11B,

BLACK

SH 36

AXLE

SH 53

239-57B ,

BLACK

JUMPER, BLACK

SH 24

239-2LL ,

BLACK

X1-12B,

BLACK

SH 36

RADIATOR

BLACK

S10

239-9L

239-16E

BLACK

BLACK

CHASSIS7

239-14J BLACK

AXLE

S9

PASSANGER FOOTWELL

239-11J

F

239-3JJ , WHITE

SH 9

BLACK

CHASSIS11

FLOOR

239-2JJ ,

WHITE

TAIL LAMP ASSY

TO

S1

TRAILER

1

TRAILER

INTERFACE

239-10L

A

NEGATIVE

LOAD CENTER

S2

BLACK

CHASSIS10

SLEEPER

239-16F

SLEEPER FLOOR

LOAD CENTER

POWER DISTRIBUTION

SPARE

BLACK

SLPR29

PD8b3417.frm

Model 387 Schematics (05 of 59)

SK30218

A

05

298-2AB,

ORANGE

SH 14

CHASSIS LOAD CENTER

298-6C ,

ORANGE

298-3B ,

ORANGE

15A

SH 10

SH13

30A

30A

30A SH47

30A

30A

50A

RED 286-1B , RED

20A

SH 22

EITHER SPARE

SPARE

SPARE

SH13

SPARE

SPARE

SPARE

SPARE

30-1A , BLACK/ORANGE

SH10 TURN SIGNAL

ENGINE STOP

ENGINE BATTERY

304-3D , RED

304-5B,

RED

286-2A, RED

S4

304-2B , RED

SPARE

15A

15A

10A

20A

10A

15A

15A

15A

5A

20A

20A

20A

40A

SH12

MARKERLAMPS

A29-1A, PURPLE LAMP,STOPSH43

SH47

BATTERYENGINE

SH47

BATTERYENGINE SH47

86

30

START

86

30

SH 15, FUELFILTER

SH16, AIRDRYER SH17, INTERFACEMODULE

SH17, INTERFACEMODULE

FOGLAMPS

LHHEADLAMPSH13

RHHEADLAMPSH13

HVACHTR BLOWERSH34 FAN

SPARE

SPARE

SPARE

85

87

87A

286-1,

85

87 87AIGNITION

SPARE

SPARE

WIPER/WASHER

REVERSE LAMPS

SH 8, FAN )

SH 13, DRL

SH47, ENGINE IGNITION

SH 9, A/C CLUTCH

SH 11

8-1A , BROWN

20A

A8-1A,

BROWN

20A

242-1B , RED

SH 9

304-1C,

RED

20A

39-1A , ORANGE/BLUE

SH 9

239-12J, BLACK

S2

SPARE

239-12, BLACK

20A

3-1A ,

WHITE

SH 9

SPARE

20A

39-2 ,

ORANGE/BLUE

SH 9

29-1 , PURPLE

29-1A ,

PURPLE

WITH OVER CRANK PROTECTION

SPARE

ENG22 +

20A

20-1 ,

ORN/BLACK

SH 11

S

A

SPARE

B

SH 50

286-2 , RED

-

RED/BLACK

E

STARTER

G

ENG24ENG23

N

A A

A

S2

239-12, BLACK

239, BLACK

R

239-13, BLACK

B B

A239, BLACK

O

A29-1 ,

PURPLE

,

ENG25

1

B522-1,

A

-

8

WITHOUT OVER CRANK PROTECTION

B

9

239, BLACK

2

12-1 ,

ORANGE

TRLR2

PURPLE

SLEEPER LOAD CENTER

CAB LOAD CENTER

CAB3

1

CAB PANEL

S4

SH 50

298-1A ,

ORANGE

1

CAB

TRAILER LOAD CENTER

A29-2 ,

LOAD

304, RED

1

IGNITION

CENTER

0

SWITCH

3

6

FOR SPARE

2

SH 46

SH 22

25A

RED

+12V POWER

226-5D,

AND STARTING

SH 34

PD8b3417.frm

Model 387 Schematics (06 of 59)

SK30218

A

06

SH5

397-3A, RED

FW5

397-1 , RED

7

3

398-1 , RED/BLUE

5

403-1 , RED/BLACK

WIPER

402-1 , RED/YELLOW 2

MOTOR

239-2 , BLACK

4

S7

S1

239-4 , BLACK

1

FW2

RED

RED

BLACK

1

WASHER

FW3

P

MOTOR

-3971A,

-3972A,

239-1,

404-1 , LtBLUE/YELLOW

7

6

5

4

3

2

CLC12

239-16, BLACK

S2

LtBLUE/YELLOW

RED/BLUE

RED/BLACK

RED/YELLOW

398-1A,

403-1A ,

402-1A,

404-1A ,

397-1B, RED

398-1B, RED/BLUE

403-1B , RED/BLACK

402-1B, RED/YELLOW

404-1B , LtBLUE/YELLOW

S1

R

R

W

RED/BLACK

R A

E

O

L

U

L

L

E

B

Y

D

/

/

K

D

D

E

E

E

C

L

,

,

,

B

,

-

-

-

,

1B-

-

B

B

B

7

1

1

1

4

403

3

3

4

2

7

8

2

9

9

9

0

3

397-3 , RED

CAB104

3

2

1

2

1

3

4

CAB9

WIPER/WASH

SWITCH

WIPER/WASHER

M

PD8b3417.frm

Model 387 Schematics (07 of 59)

SK30218

A

07

FIREWALL

243-1B , PINK/BLACK

CAB LOAD

CENTER

FIREWALL

243-1B, PINK/BLACK	PINK/BLACK
	A243-1,

243-1A, PINK/BLACK

CAB40			STEERING COLUMN
1	1	OEM HARNESS	1

1 CLC12

	FW6
243-1 , PINK/BLACK
		B	HORN
239-3CC, BLACK		A

S1	HORN

PD8b3417.frm

Model 387 Schematics (08 of 59)

SK30218

A

08

CUMMINS		S1
NOTE: FAN SHOWN IN "ON" CONDITION
	A 239-5 ,	BLACK
	B 220-1 ,	WHITE/LtGREEN	8 220-1A , WHITE/LtGREEN
FAN	FW4		CLC12

SOLENOID

	SH 5
RED
226-1 ,
1 3	ENGINE
	FAN
5	4
2
BLACK/GREEN
B646-1A ,

							7	9
A522-1 ,	GREEN/WHITE			A522-1A ,	GREEN/WHITE		2B	3	MANUAL
								1
A220-1 ,	WHITE/LtGREEN			A220-1A ,	WHITE/GREEN				FAN
									SWITCH
522-1A ,	WHITE/GREEN			522-1B , WHITE/GREEN				6
							5B	4
							8	10
							239-25 , BLACK		SH 53
						253-7 , LtBLUE			SH 52
	522-1 ,	WHITE/GREEN	13	OEM HARNESS		13	CUMMINS
	B646-1 ,	BLACK/GREEN	12			12
							ECU

CATERPILLAR

NOTE: FAN SHOWN IN "ON" CONDITION	S1
A	239-5U , BLACK
B	220-1B , WHITE/LtGREEN
FW4-A
FAN
SOLENOID

MANUAL FAN CONTROL

220-1C , WHITE/LtGREEN

	SH 5
RED
226-1M,						7	9
		A522-1B , GREEN/WHITE		A522-1C , GREEN/WHITE		2B	3
		A220-1C,	WHITE/LtGREEN	A220-1D ,	WHITE/GREEN			MANUAL
							1
		522-1C , WHITE/GREEN		522-1E ,	WHITE/GREEN			FAN
1	3
								SWITCH
							6
		ENGINE
5	4					5B	4
		FAN
2
						8	10
					239-25C , BLACK			SH 53
						253-7B , LtBLUE		SH 52
			522-1D , WITE/GREEN			CATERPILLAR
B646-1B ,		BLACK/GREEN	239-10C , BLACK			ECU
			S2

PD8b3417.frm

Model 387 Schematics (09 of 59)

SK30218

A

09

A

B

93-1B,

LtGREEN/WHITE

C

180-1 ,

YELLOW/WHITE

A

457-3 , BLACK

CATERPILLAR

D

180-1 ,

YELLOW/WHITE

B

A220-1E,

WHITE/LtGREEN

ECU

E

570-3 ,

YELLOW/WHITE

ENG14-A

F

A/C PRESSURE

CAB51

SWITCH

D

634-1 ,

WHITE

B

239-59 ,

BLACK

A

152-1 ,

RED/YELLOW

342-5 ,

YELLOW/WHITE

A

TEMP

B

A220-1B,

WHITE/LtGREEN

17

OEM HARNESS

17

CUMMINS

C

342-3 ,

YELLOW/WHITE

TEMP-1, GRAY/BLACK

B SENSOR

A

A646-1 ,

LtGREEN

18

18

ECU

E

629-2 ,

BLUE

CAB58

ENG14

HVAC

F

634-2 ,

WHITE

A/C PRESSURE

UNIT

G

629-1 ,

BLUE

HVAC

SWITCH

H

S16

239-59 ,

BLACK

342-1 ,

YELLOW/WHITE

CAB50

239-62 ,

BLACK

CAB

239-60 ,

BLACK

B 93-1A,

LtGREEN/WHITE

LOAD CENTER

239-58 , BLACK

A

239-6S ,

BLACK

S13

A248-1, RED/BLACK

ENG15

253-24 ,

LtBLUE

A/C

S2

570-4 ,

YELLOW/WHITE

COMPRESSOR

SH 34

LtGREEN/WHITE

SLEEPER8

8

SLPR

A

45-1,

LtBLUE/BLACK

B93-2 ,

LtGREEN/WHITE

SH 5

SH 5

D

212-1 ,

RED/GREEN

C

240-1 ,

LtGREEN/WHITE

B93-1 ,

LtGREEN/WHITE

B

153-1,

RED/BLUE

1

3

,

93-1

CAB49

A/C CLUTCH

5

4

A629-1, BLUE/BLACK

G

2

A634-1,

WHITE/BLACK

F

570-5,

YELLOW/WHITE

H

239-60 ,

BLACK

D

HVAC

MODULE

TEMP-1, GRAY/BLACK

C

342-4,

YELLOW/WHITE

E

570-2 , YELLOW/WHITE

342-2 , YELLOW/WHITE

A634-1 , WHITE/BLACK

240-1 , LtGREEN/WHITE

634-2 , WHITE

B

A248-1 , RED/BLACK

A629-1 , BLUE/BLACK

152-1 , RED/YELLOW

253-24 , LtBLUE 570-5 , YELLOW/WHITE

212-1 , RED/GREEN

629-1,

BLUE

A

239-62 , BLACK

239-58 , BLACK 634-1 , WHITE

153-1 , RED/BLUE

CAB52

629-2 , BLUE

93-1B, LtGREEN/WHITE

A93-1 , LtGREEN/WHITE

45-1, LtBLUE/BLACK

45-1A,

LtBLUE/BLACK

239-57 ,

BLACK

SH 4

A

B

C

D

CAB46

A

B

C D

E

F

G H

CAB48

A

B

C D

CAB47

HVAC CONTROLLER

HVACCUMMINS/CATERPILLAR

PD8b3417.frm

Model 387 Schematics (10 of 59)

SK30218

A

10

TURN

D

CAB PANEL

TRAILER LOAD CENTER

SIGNAL

C

227-2 ,

GREEN/BLACK

SWITCH

B

CAB

SH 5

24

10

WARNING

A

LOAD

242-1B ,

RED

CENTER

14

1

LAMP

239-3 ,

WHITE

SH 4

CAB8

LIGHT BAR

BAR

228-2 ,

YELLOW/BLACK

WHITE

HAZARD

A

281-1 ,

WHITE

CAB PANEL

SH5

SH47

SH 5

SH 5

SH 5

SH5

ACC

86

30

SWITCH

B

E

87

87A

,

CAB6

U

85

L

239-5A, WHITE 239-4A

B

/

286-1B ,

RED

E

G

39-2 , ORANGE/BLUE

39-1A , ORANGE/BLUE

N

A

R

O

A281-2 , WHITE

TURN SIGNAL

AUX, BLUE

,

3-1 , WHITE

3-1A , WHITE

1

-

37-1 ,

GREEN

37-1A ,

GREEN

86

30

9

3

A

38-1 ,

YELLOW

38-1A ,

YELLOW

87A

87-3

87

227-1 ,

GREEN/BLACK

227-2A ,

GREEN/BLACK

85

228-1 ,

YELLOW/BLACK

228-2A ,

YELLOW/BLACK

281-1 ,

WHITE

281-1A ,

WHITE

85-3

86-3

A227-1 , GREEN

TO TRAILER

39-1 ,

ORANGE/BLUE

39-1B ,

ORANGE/BLUE

3-2 ,

WHITE

279-1 , RED

INTERFACE

A228-1 , YELLOW

STOP LAMP

WHITE

FLASHER

86 30

SH 5

UNIT

87ASTOP LAMP

86

30

S6

87

S5

85

87

87A

,

85

239-6

A281-2 ,

WHITE

WHITE

TURN SIGNAL

239-7 , WHITE

SH 12

GREEN/BLACK

YELLOW/BLACK

2 ,

86

30

281-

87

87A

227-4 ,

GREEN/BLACK

227-1E ,

GREEN/BLACK

85

WHITE

281-1B , YELLOW/BLACK

RH

228-4 , YELLOW/BLACK

228-1E , YELLOW/BLACK

RH

LH

FRONT

227-1A,

228-1A,

A281-1 ,

REAR TURN

REAR TURN

TURN

SIGNAL

SIGNAL

SIGNAL

GREEN

227-1B ,

GREEN/BLACK

TLJ1-B

TLJ2-B

C

37A,

BLACK

C

LH

GREEN

228-1B ,

YELLOW/BLACK

2

2

37-1B ,

GREEN

4

4

38-1B ,

YELLOW

FRONT

S4

TURN

227-3 ,

GREEN/BLACK 9

9

227-1D ,

GREEN/BLACK

239-4X ,

BLACK

SIGNAL

B

A

228-3 ,

YELLOW/BLACK

10 10

228-1D ,

YELLOW/BLACK

A281-1A ,

WHITE

S1

CLC3

CHASS1

A

B 239-11A ,

BLACK

STP1 HOOD14

D

239-1KL ,

BLACK

S2

LH

B

B

227-1C ,

GREEN/BLACK

239-2C ,

BLACK

SIDE

A 228-1C , YELLOW/BLACK

C

REPEATER

K

E

REP1

REP2

C

T

I

A

H

L

W

RH

B

239-3A ,

BLACK

B

SIDE

,

,

C

A

B

REPEATER

1

1

-

REP3

-

1

9

8

3

2

2

A

B

A

STP2

STOP

TURN SIGNAL/STOP/HAZARD/AUX TRAILER

LAMP

SWITCH

PD8b3417.frm

Model 387 Schematics (11 of 59)

SK30218

A

11

				SH 5
			242-2 , RED	242-1 , RED
			1	3
				REVERSE LAMP
			5	4
			2
NOT USED			A269-2 , PINK/WHITE	269-1 , PINK/WHITE 3 3	S5
					269-1A , PINK/WHITE
			E	CLC3 CHASS1
			T
			I
			H		PINK/WHITE
			W
			/
			K
			N
			I
			P
			,
			1
			-
			9		,
			6		269-2
			2
			A
					A
					CHASS8
REVERSE B		239-7T ,	S2		SPARE
			BLACK		BACKUP
LAMP	A	A269-1A ,	PINK/WHITE
SWITCH
	ENG16
						BLACK
						269,
					A TLJ1-A	A	TLJ2-A
					LH		RH
	REVERSE LAMPS				REVERSE LAMPS

269-3 , PINK/WHITE

PD8b3417.frm

Model 387 Schematics (12 of 59)

SK30218

A

12

SH 53

239-15 ,

BLACK

A5-2 ,

ORANGE/BLACK

7

9

BLACK239-14 ,

BLACK

2B

3

239-13 ,

1

239-12A , BLACK

TRAILER LOAD CENTER

6

5-1 , ORANGE/BLACK

5B

4

SH 9

SH 53

8

10

239-7 , WHITE

SH 5

ORN/BLACK

CAB

PANEL

CLEARANCE

LAMP

SWITCH

,

HDR2

20-1

2

5-1A , ORANGE/BLACK

HEADER

25-2 , ORANGE/BLACK

25-1 ,

ORANGE/BLACK

SH 5

1

239-1C , BLACK

CAB LOAD CENTER

86

30

MARKER

86

30

87

87A LAMP

HDR3

MARKER

87A LAMP

85

2

5-2 , ORANGE/BLACK

87

85

1

239-2A , BLACK

ORANGE/BLACK

CAB

8-5 , BROWN

HDR4

FIREWALL

8-3 ,

BROWN

8-1A , BROWN

SH 5

ICC

2

5-3 , ORANGE/BLACK

A5-1A , BLACK

LAMPS

1

239-3B , BLACK

A5-1 , ORANGE/BLACK

HDR5

A8-1B,

BROWN

A8-1 , BROWN

NOT USED

8-4 ,

BROWN

S3

8-2 ,

BROWN

,

2

5-4 , ORANGE/BLACK

5-1B

BROWN

1

239-4B , BLACK

8

CLC3

HDR6

8

CHASS1

,

2

5-5 , ORANGE/BLACK

BROWN 8-1

1

239-5B , BLACK

2A , ORANGE

S3

S2

S6

S7

BROWN1B8-,

8-3A , BROWN

S5

8-1C,

BROWN

BROWN

5-

S4

8-4B ,BROWN

8-2A,

8-4A ,

8-6 , BROWN

239-9M, BLACK

8-5B , BROWN

239-7U , BLACK

8-3B , BROWN

8-2B , BROWN

8-5A , BROWN

C

CHASS2

A

CHASS9

5-2AB, ORANGE

C

REP1

SPARE

MARKER

SPARE

MARKER

1

HOOD7

6

8

HOOD3

6

8

HOOD2 1

HOOD4

6

8

HOOD3-A7

6

8

HOOD2-A7

BROWN8-1H,

BLACK

BLACK

BROWN

BLACK

BROWN

S1

8,

B

TLJ1

B

TLJ2

BROWN

BROWN

2

1

HOOD3-A6

2

1

HOOD2-A6

RH

LH

TAIL

TAIL

,

,

LAMP

LAMP

8-2G

8-3H

RH

LH

MARKER LAMPS

MARKER

MARKER

LAMP

LAMP

A

REP2

A

REP3

RH REPEATER

LH REPEATER

PD8b3417.frm

Model 387 Schematics (13 of 59)

SK30218

A

13

TURN

298-5 ,

ORANGE

SIGNAL SWITCH

86

30

CAB7

D

C B

A

HEADLAMP

DM4-3,

LtBLUE

85

87 87A

HI BEAM W/LAMP

CAB LOAD CENTER

A4R-1, LtBLUE

A4L-1 , LtBLUE

20A

WARNING

DM4-1A,

LtBLUE

20A

LIGHT 6

6

5A

BAR

LIGHT BAR

B4-1A ,

LtBLUE

B4-1 ,

LtBLUE

B4-2 ,

LtBLUE

CAB

2

DM4-2A,

LtBLUE

DM4-2, LtBLUE

DM4-2,

LtBLUE

FIREWALL

LtBLUE

5

SH 5

H

DRLDIS-2A, WHITE/BLACK

DRLDIS-2,

WHITE/BLACK

S

DRLDIS-1A, WHITE

DRLDIS-1,

WHITE/BLACK

CAB PANEL

42-LH-3 , BLUE/WHITE

43-LH-2 , BLUE/WHITE

4R-1,

SH 14

E4-1A ,

LtBLUE/BLACK

E4-1 ,

LtBLUE/BLACK

A328-1A ,

LtGREEN

A328-1 , LtGREEN

D

LtBLUE

E

BLACK

E

R

U

1

3

1

3

L

,

B

4

t

L

S5

DRL LH

DRL RH

-

,

2

,

239-38 ,

BLACK

5

4

,

5

4

4

4L-1

239-8

2

2

2

2

-

242-7 ,

RED

3

5

PARK BRAKE

S2

2

53

239-14A , BLACK

239-13A , BLACK

SWITCH

S5

YELLOW/BLACK

242-6 ,

RED

1

3

SH

B5-1 ,

ORANGE/BLACK

228-5 ,

S6

242-5 ,

RED

DRL

5

4

B4-3 ,

LtBLUE

GREEN/BLACK

BLUE/WHITE

DISABLE

239-12B , BLACK , LTBLUE

227-5 ,

2

253-1 , LtBLUE 239-9A, BLACK

239-8A , BLACK

SH 52

253- , LtBLUE SH 52 SH 53

239-19A ,

BLACK

SH 53

E4-2 ,

LtBLUE/BLACK

1

3

1

3

5

4

HI BEAM LH

5

HI BEAM RH

A42-RH,

239-17B , BLACK

4

N

2

2

LtGREEN

E

E

LtBLUE

239-18B , BLACK

R

239-16C, BLACK

239-7B , BLACK

G

t

L

,

A328-1,

E

K

2

B4-2,

-

S2

C

8

T

2

I

A

H

3

L

B

W

B

/

/

D

E

B1

B2

C1

C2

D1

D2

U

E

42-RH-2 , BLUE/WHITE

L

R

B

,

239-9 ,

BLACK

SH 14

B328-1 ,

LtGREEN

10 9

8

7 6

5

4

3

2 1

CAB13

,

1

1

-

H

-

H

L

HEAD LAMP

PASS SIGNAL

L

1

BLACK23910-, B42B-

LtBLUE3K,253-

BLACK15E,239-

2LH239-

2RH239-

BLUE/WHITEA42LH,-

-

BLUE/WHITERH421--,

RED/BLACK41RH1,--

A42,

BLUE/WHITE

SH 14

SWITCH

SWITCH

2

4

4

7

9

7

9

3

2

HOOD3-2

2B

2B 3

S5

S1BROWN

1

1

8-5G ,

BROWN

BROWN

DRL

1

239-1RH

BLACK

3

S2

6

5B 6

BLACK

BLACK

5B

239C,

4

4

A42-RHA,

BLUE/WHITE

BLUE/WHITE

B

RH

41-RH,

RED/BLACK

RED

A

8

10

8

10

HEAD LAMP

42-RH,

BLUE/WHITE

BLUE/WHITE

C

HOOD3-A3

HOOD2-A3

41-LH ,

RED/BLACK

RED

A

LH

42-LH ,

BLUE/WHITE

BLUE/WHITE

C

HEAD LAMP

A42-LHA,

BLUE/WHITE

BLUE/WHITE

S3

B

239D,

BLACK

BLACK

3

HEADLAMP/DRL

S4

239-1LH

BLACK

1

DRL

BROWN

BROWN

S1

8-3J ,

2

BROWN

HOOD2-4

PD8b3417.frm

Model 387 Schematics (14 of 59)

SK30218

A

14

CAB

LOAD

CENTER

CAB

FIREWALL

			CAB PANEL
SH 52	SH 52	SH 53	SH 53
253-5C, LtBLUE	, LtBLUE		239-22B , BLACK
7-3B, PURPLE	253-4E	239-20A , BLACK	239-22A , BLACK	A7-1A , PURPLE

FOG LAMP

SWITCH

7 9

3

2B

1

6

5B

4

8 10

			298-2AB , ORANGE			SH 5
				27-1 ,	PURPLE	SH 5
A7-2 , PURPLE		1	3
			4	FOG LAMP
		5		DISABLE
		2
	A7-1 , PURPLE	PURPLE
		7-1 ,		239-8 , BLACK		SH 13
	A7-2 , PURPLE		239-9 ,		BLACK	SH 13
7-3B , PURPLE		1	3
		5	4	FOG LAMP
		2
	7-3 , PURPLE	BLUE/WHITE	2A,-7 PURPLE
						S2 7-2B , PURPLE
						239-12 , BLACK
		A42,				S6
					7-1A ,	PURPLE

SH 13

7-3A , PURPLE

239-13H , BLACK

S3

HOOD5

A

LH FOG LAMP

B

HOOD6

A

RH FOG LAMP

B

FOG LAMPS

PD8b3417.frm

Model 387 Schematics (15 of 59)

SK30218

A

15

1

SH 5	382-1A, LtGREEN/RED	382-1 , LtGREEN/RED			1	FUELHEATER
			HOOD10

2

FUEL HEATER

PD8b3417.frm

Model 387 Schematics (16 of 59)

SK30218

A

16

HOOD12

SH 5

384-1A , BLUE

384-1 , BLUE

239-4C , BLACK

S1

A

B

AIR

DRYER

AIR DRYER

PD8b3417.frm

Model 387 Schematics (17 of 59)

SK30218

A

17

S2

S1

S3

5

SH

CHASS6

239-8B ,

BLACK

B

AXLE TEMP

A

REAR

CAB

LOAD

CLC3 CHASS1

CHASS4

CENTER

RED

AXLE TEMP

36-1A ,

GRAY/BLACK

6

6

36-1B ,

GRAY/BLACK

239-6A ,

BLACK

B

FORWARD

35-1A , GRAY/BLACK

5

5

35-1B ,

GRAY/BLACK

A

CAB

90-1B ,

YELLOW/BLUE

90-1A , YELLOW/BLUE

,

673-1A

59-1A ,

VIOLET

7

7

241-1 ,

GRAY/BLACK

FIREWALL

637-1B ,

LtGREEN

637-1A , LtGREEN

CHASS3

239-11B ,

BLACK

11 11

239-12D , BLACK

636-1B ,

PURPLE/BLACK

636-1A , PURPLE/BLACK

AUX XMSN

2-1A ,

TAN/BLACK

12 12

2-1B ,

TAN/BLACK

A

NOT USED

542-1A , LtGREEN

TEMP

326-1A , GREEN

239-4D ,

BLACK

B

327-1A ,

BLACK

60-1 , GRAY/BLACK NOT USED

CHASS14

S2

F

326-1B, GREEN

B

327-1B , BLACK

A

542-1 , LtGREEN

636-1 , PURPLE/BLACK

637-1 , LtGREEN

90-1 , YELLOW/BLUE

673-1 , RED

36-1 , GRAY/BLACK 35-1 , GRAY/BLACK 59-1 , VIOLET 2-1 , TAN/BLACK 326-1 , GREEN

327-1 , GRAY/BLACK

FUEL TANK

SENDER RH

ENG4-B

B

PYRO

A

S1

HOOD14-A

337-1 , BROWN

B

AMMETER

338-1 ,BROWN/BLACK

A

A

NOT AVAILABLE

HOOD12-A

239-3C , BLACK

B

F

338-1 , BROWN/BLACK

LH FUEL TANK

1-1 , TAN/RED A

239-2D, BLACK

337-1 , BROWN

1-1 , TAN/RED

G

D

E A C H B F J

K

HOOD9A B

F

E D

C

A HOOD10A

INTERFACE MODULE

INTERFACE MODULE

PD8b3417.frm

Model 387 Schematics (18 of 59)

SK30218

A

18

SH 52

SH 52

LtBLUE		, BLACK
253-7C,		239-27C
253-8B , LtBLUE	239-26D , BLACK	A132-1 , RED/TAN

7 9

2B 3

1

6

5B 4

8 10

SPOT LAMP

SWITCH

SH53

SH 53

132-1 , RED/TAN

CAB

LOAD

CENTER

CAB

PANEL

239-11C , BLACK

HEADER

132-1A , RED/TAN

132-2 , RED/TAN

239-12E , BLACK

	1 2		HDR12	1 2 HDR13

SPOT LAMPS

PD8b3417.frm