INSTALLATION INSTRUCTIONS FOR PART 99-3304
APPLICATIONS
Buick Terraza 2005-2008
Chevrolet Corvette 2005-2010
Chevrolet Uplander 2005-2008
Hummer H3 2006-2009
Pontiac Montana (SV6 only) 2005-2007
Saturn Relay 2005-2007
99-3304
KIT FEATURES
• DIN Head Unit Provisions with Pocket
• ISO DIN Head Unit Provisions with Pocket
KIT COMPONENTS
A) Radio Housing • B) ISO Brackets • C) Trim Plate
C
A
B
WIRING AND ANTENNA CONNECTIONS (Sold Separately)
Harness:
• GMOS-01 - GM Interface 2002-up
• GMOS-04 - GM Amplified Interface 2002-up
Antenna Adapter:
• 40-GM10 - GM antenna adapter 1988-up
TOOLS REQUIRED:
Socket Wrench • Flat Blade Screwdriver • Phillips Screwdriver
1-800-221-0932
© COPYRIGHT 2004-2009 METRA ELECTRONICS CORPORATION
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99-3304
CHEVY UPLANDER, PONTIAC MONTANA
SV6, BUICK TERRAZA 2005-2008/
SATURN RELAY 2005-2007
Disconnect the negative battery
terminal to prevent an accidental
short circuit.
1
2
3
Unclip and remove trim panel around
radio and a/c control. (Figure A)
Remove (8) 9/32” screws to extract
radio and a/c control from sub dash.
(Figure A)
A
1
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99-3304
CHEVROLET CORVETTE 2005-2010
Disconnect the negative battery terminal to
prevent an accidental short circuit.
1
Unclip and remove ride control switch/blank
plate at front edge of center console lid.
(Figure A)
2
Remove (2) 9/32” screws from under plate
3
removed in step 2. (Figure A)
Unclip and remove entire panel surrounding
radio and including a/c controls. (Figure A)
4
5
Remove (4) 9/32” screws securing radio to
extract from sub dash. (Figure A)
A
2
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99-3304
HUMMER H3 2006-2009
A
Disconnect the negative battery
terminal to prevent an accidental
short circuit.
1
2
Unclip and remove trim panel around
radio and a/c controls.
(Figure A)
Remove (4) 9/32” screws securing
radio. (Figure B)
3
4
B
Unplug and remove radio.
3
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99-3304
DIN HEAD UNIT PROVISIONS
A
Slide the DIN cage into the Radio
Housing and secure by bending the
metal locking tabs down. (Figure A)
1
2
Slide the aftermarket head unit into
the cage and secure. (Figure B)
B
4
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99-3304
ISO DIN HEAD UNIT PROVISION
A
Mount the ISO Brackets to the head
unit with the screws supplied with
the unit. (Figure A)
1
2
Slide the head unit into the radio
opening until the side clips engage.
(Figure B)
B
Snap the Trim plate into the Radio
3
Housing. (Figure B)
5
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FINAL ASSEMBLY
99-3304
FINAL ASSEMBLY
Locate the factory wiring harness in the dash and make the connection as shown.
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
electrical short circuit.)
1
Re-connect the negative battery terminal and test the unit for proper operation.
Reassemble radio and dash assemblies in reverse order of disassembly.
2
3
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
A)
B)
C)
D)
Strip wire ends back 1/2"
Twist ends together
Solder
B
C
Tape
D
METRA / EIA WIRING CODE
12V Ignition / Acc . . . Red
Right Front (+) . . . . . Gray
12V Batt / Memory . . Yellow
Ground . . . . . . . . . . . Black*
Power Antenna . . . . . Blue
Right Front (-). . . . . . Gray / Black
Left Front (+) . . . . . . White
Left Front (-). . . . . . . White / Black
Right Rear (+). . . . . . Violet
Amp Turn-On . . . . . . Blue / White
Amp Ground . . . . . . . Black / White
Illumination. . . . . . . . Orange
Dimmer . . . . . . . . . . Orange / White
Right Rear (-) . . . . . . Violet / Black
Left Rear (+). . . . . . . Green
Left Rear (-) . . . . . . . Green / Black
*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.
1-800-221-0932
REV. 04/21/10
© COPYRIGHT 2004-2010 METRA ELECTRONICS CORPORATION
INST99-3304
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