INSTALLATION INSTRUCTIONS FOR PART 99-3051
APPLICATIONS
Chevrolet Corvette
1990-1996
99-3051
KIT FEATURES
• ISO mount Radio Provision with Pocket
• Two ISO Mount Unit’s Provision
• Double DIN Radio Provision
KIT COMPONENTS
( A) Pocket • ( B) Brackets • ( C) Trim Plate • ( D) (4) #6 X 1/4”Phillips Head Screws • (E) (2) #8 X 3/8” Phillips Head Screws
D
A
B
WIRING AND ANTENNA CONNECTIONS (Sold Separately)
Wiring Harness:
• 70-1856 - 17ft bypass harness (Non-Bose) 1989-1996
• 70-1857 - 17ft bypass harness (Bose) 1989-1996
Antenna Adapter:
• Not required
TOOLS REQUIRED:
Phillips Screwdriver • Rotary Cutting Tool
C
E
1-800-221-0932 www.metraonline.com
© COPYRIGHT 2004-2009 METRA ELECTRONICS CORPORATION
99-3051
K
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TABLE OF CONTENTS
Dash Disassembly
1990-1996 Chevrolet Corvette . . . . . . . . . . . . . . . . . . . . . . . . . .1, 2
Kit Assembly
ISO Mount Radio Provision with Pocket . . . . . . . . . . . . . . . . . . . 3
Double DIN Radio Provision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Two ISO Mount Unit’s Provision . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
99-3051
1990-1996 CHEVROLET CORVETTE
Disconnect the negative battery
1
terminal to prevent an accidental
short circuit.
2
Remove (2) screws from center AC
vent and remove vent.
Remove rubber inserts in cup hold-
3
ers and remove screw.
Remove (2) screws from under carpet
4
inside center console.
(Figure A)
(Figure B)
DASH DISASSEMBLY
A
B
Set parking brake and place shifter
5
into the drive position.
Lift the center console up and slide
6
back.
Remove (3) screws from radio/clim-
7
ate control trim panel and remove
panel.
Remove (2) screws from side trim
8
panels to gain access to radio
screws and remove (4) screws
securing radio, unplug and remove
radio.
(Figure C)
(Figure C)
C
1
99-3051
CUT OUT
1990-1996 CHEVROLET CORVETTE
Cut and remove obstruction from
9
rear of radio cavity.
D
(Figure D)
DASH DISASSEMBLY
2
99-3051
1990-1996 CHEVROLET CORVETTE
ISO MOUNT RADIO WITH POCKET
Mount the pocket trim-plate to the
1
pocket using the (2) #8x3/8” Phillips
head screws provided with kit.
Larger lip towards top of pocket.
(Figure A)
Align the mounting holes in the
2
brackets with the mounting holes in
the side of the radio and mount the
brackets to the radio using screws
provided with the radio.
(Figure B)
KIT ASSEMBLY
A
B
Align the mounting holes in the brack-
3
ets below the radio with the mounting
holes in the pocket and mount the
pocket to the brackets using the (4)
#6x1/4” Phillips head screws provided
with the kit.
Continue to final assembly.
4
(Figure C)
C
3
99-3051
1990-1996 CHEVROLET CORVETTE
DOUBLE DIN RADIO PROVISION
Align the mounting holes in the left
1
bracket with the mounting holes in
the left side of the radio and mount
the bracket to the radio using
screws provided with the radio.
(Figure A)
Repeat step one with the right
2
bracket on the right side of the radio.
KIT ASSEMBLY
A
Continue to final assembly.
3
TWO ISO MOUNT UNITS
Align the mounting holes in the left
1
bracket with the mounting holes in the
left side of both units and mount the
bracket to both units using screws
provided with the units.
Repeat step one with the right bracket
2
on the right side of the units.
(Figure A)
A
Continue to final assembly.
3
4
99-3051
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
electrical short circuit.)
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
Amp Ground . . . . . . . Black / White
Illumination. . . . . . . . Orange
Right Front (+) . . . . . Gray
Right Front (-) . . . . . . Gray / Black
Left Front (+) . . . . . . White
Left Front (-) . . . . . . . White / Black
Right Rear (+). . . . . . Violet
Right Rear (-) . . . . . . Violet / Black
Left Rear (+). . . . . . . Green
Dimmer . . . . . . . . . . Orange / White
*NOTE: When a Black wire is not present, ground radio to vehicle chassis.
All colors may not be present on all leads due to manufacturer’s specifications.
Left Rear (-) . . . . . . . Green / Black
5
INST993051
1-800-221-0932 www.metraonline.com
REV. 06/05/09 © COPYRIGHT 2004-2009 METRA ELECTRONICS CORPORATION INST99-3051
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