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Disconnect the negative battery
terminal to prevent an accidental
short circuit.
2
Unclip panel below steering column
and remove. (Figure A)
3
Remove (4) Phillips screws from
metal brace below steering column
and remove. (Figure A)
DASH DISASSEMBLY
A
B
4
Looking at the side of the radio/climate control panel from underneath
the steering column opening, remove
(1) 10mm bolt from the side of the
radio chassis. (Figure B)
5
Carefully remove the side panels
from each side of the radio/climate
control panel by pulling straight back
towards the rear of the car.
(Figure C)
C
1
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99-7506
MAZDA MX-5 MIATA 2006-2008
6
Remove (2) Phillips screws, (1) on
each side, from the side of the
radio/climate control panel.
(Figure D)
DASH DISASSEMBLY
D
E
7
Pull radio/climate control panel out,
disconnect plugs and remove.
(Figure E)
8
Turn the radio/climate control panel
over and remove the (4) screws that
hold the climate control to the bezel,
then remove the climate control.
(Figure F)
F
2
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99-7506
MAZDA MX-5 MIATA 2006-2008
1
Attach the (4) Panel Clips to the posts
on the back of the radio housing.
(Figure A)
KIT PREPARATION
A
3
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99-7506
DIN HEAD UNIT PROVISION
1
Turn over the 99-7506 housing, take
the climate control and screws
removed from the factory panel and
attach the climate control to the kit
housing using the factory screws.
(Figure A)
2
Slide the pocket into the bottom
section of the kit housing.
KIT ASSEMBLY
A
B
(Figure B)
3
Slide the DIN cage into the Radio
Housing and secure by bending the
metal locking tabs down.
4
Slide the aftermarket head unit into
the cage and secure.
(Figure C)
(Figure D)
C
D
4
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99-7506
ISO DIN HEAD UNIT PROVISION
1
Turn over the 99-7506 housing, take
the climate control and screws
removed from the factory panel and
attach the climate control to the kit
housing using the factory screws.
(Figure A)
2
Slide the pocket into the bottom
section of the kit housing.
KIT ASSEMBLY
A
B
(Figure B)
3
Mount the ISO Brackets to the head
unit with the screws supplied with
the unit.
4
Slide the head unit into the radio
opening until the side clips engage.
(Figure D)
5
Snap the Trim plate into the Radio
Housing.
(Figure C)
(Figure D )
C
D
5
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99-7506
DOUBLE DIN HEAD UNIT PROVISION
1
Turn over the 99-7506 housing, take
the climate control and screws
removed from the factory panel and
attach the climate control to the kit
housing using the factory screws.
(Figure A)
2
Cut the rib in the middle of the 997506 housing to make room for the
DDIN brackets.
(Figure A)
KIT ASSEMBLY
A
B
3
Slide the appropriate DDIN bracket
into the kit housing.
4
Slide the DDIN radio unit into DDIN
brackets and secure the unit to the
kit using the screws supplied with
the head unit.
5
Snap the DDIN trim plate into the
front of the kit housing.
(Figure B)
(Figure C)
(Figure C )
C
6
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99-7506
STACKED ISO DIN HEAD UNIT PROVISION
1
Turn over the 99-7506 housing, take
the climate control and screws
removed from the factory panel and
attach the climate control to the kit
housing using the factory screws.
(Figure A)
2
Cut the rib in the middle of the 997506 housing to make room for the
DDIN brackets.
(Figure A)
KIT ASSEMBLY
A
B
3
Slide the appropriate DDIN bracket
into the kit housing.
4
Slide the stacked ISO DIN units into
the DDIN bracket assembly and
secure the units to the kit using the
screws supplied with the head units.
(Figure C)
5
Snap the DDIN trim plate into the
front of the kit housing.
(Figure B)
(Figure C )
C
7
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99-7506
FINAL ASSEMBLY
FINAL ASSEMBLY
Locate the factory wiring harness in the dash and make the connection as shown.
1
Metra recomends using the proper mating adapter and making the connections as
shown. (Isolate and individually tape off the ends of any unused wires to prevent
Re-connect the negative battery terminal and test the unit for proper operation.
2
3
Reassemble radio and dash assemblies in reverse order of disassembly.
FINAL WIRING CONNECTIONS
Make wiring connections using the EIA color code chart shown below and the instructions included with the head
unit. Metra recommends making connections as shown below; Strip, Splice, Solder, Tape. Isolate and individually
tape off ends of any unused wires to prevent electrical short circuit.
A
B
C
D
A)Strip wire ends back 1/2"
B)Twist ends together
C)Solder
D)Tape
METRA / EIA WIRING CODE
12V Ignition / Acc . . . Red
12V Batt / Memory . . Yellow
Ground . . . . . . . . . . . Black*
Power Antenna . . . . . Blue
Amp Turn-On . . . . . . Blue / White
Right Front (+) . . . . . Gray
Right Front (-) . . . . . . Gray / Black
Left Front (+) . . . . . . White
Left Front (-) . . . . . . . White / Black
Right Rear (+). . . . . . Violet
Amp Ground . . . . . . . Black / White
Illumination. . . . . . . . Orange
Dimmer . . . . . . . . . . Orange / White
*NOTE: When Black a wire is not present, ground radio to vehicle chassis.
All colors may not be present on all leads due to manufacturer’s specifications.