Installation Instructions for 70-1857
70-1857
Cadillac 1987-1995 / Chevy Corvette 1990-1996
Tuner Relocation Harness /
Bose Amplifier Interface
INTRODUCTION
This harness is designed to eliminate the factory tuner brain and
interface into the Bose amplifier so an aftermarket radio can be installed.
APPLICATIONS
CADILLAC
Allanté
1987-1993
Brougham
1990-1992
Deville
1994-1995
Eldorado
1992-1995
CAUTION!
All accessories, switches, climate controls panels, and especially air bag
indicator lights must be connected before cycling the ignition. Also, do not remove
the factory radio with the key in the on position, or while the vehicle is running.
METRA. The World's best kits.
REV. 5/19/16
© COPYRIGHT 2004-2016 METRA ELECTRONICS CORPORATION
CADILLAC (CONT)
Fleetwood
1993-1995
Seville (STS, SLS)
1992-1995
CHEVROLET
Corvette
1990-1996
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Installation Instructions for 70-1857
TUNER BRAIN LOCATION
Allanté
1987-1992
Allanté
1993
Brougham
1990-1992
Deville (Concours)
1994-1995
Eldorado
1992-1995
Fleetwood
1993-1995
Seville (STS, SLS)
1992
Seville (STS, SLS)
1993-1995
Corvette
1990-1992
Corvette
1993-1996
Connections to be made
From the aftermarket radio:
• Connect the (3) Black wires to the ground wire.
• Connect the Yellow wire to the battery wire.
• Connect the Red wire to the accessory wire.
• Connect the Blue wire to the amp turn on wire. This wire must be connected
to hear sound from the factory amplifier.
• Connect the Gray RCA jack to the right front RCA jack output.
• Connect the White RCA jack to the left front RCA jack output.
• Connect the Green RCA jack to the left rear RCA jack output.
• Connect the Purple RCA jack wire to the right rear RCA jack output.
Note: If the vehicle has engine noise after installing the 70-1857, use
Axxess part number AX-AGL610, qty. (2).
METRA. The World's best kits.
REV. 5/19/16
© COPYRIGHT 2004-2016 METRA ELECTRONICS CORPORATION
Right side of instrument panel
At power antenna
Left side of instrument panel
At power antenna
At power antenna
At power antenna
Behind rear seat on passenger side up high
At power antenna
Right side of dashboard up high
Below rear storage compartment
on passenger side
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™