Owner's Manual

GMOS-04
3
Connections to be made
Attention! This vehicle may come equipped with a digital amplifier. Ensure that the
factory radio was removed with all settings in their default positions.
From the 16-pin harness with stripped leads to the aftermarket radio:
• Connect the Red wire to the accessory wire.
Note: If installing an ASWC-1 (sold separately), there will be an accessory wire
there to connect as well.
• Connect the Blue/White wire to the amp turn on wire. This wire must be
connected to hear sound from the factory amplifier.
•
If the aftermarket radio has an illumination wire, connect the Orange/White wire to it.
Note: There is an Orange/White wire on the GMOS-04 harness also. If a wire is
populated on the factory wiring harness, use that wire instead.
• If the aftermarket radio has a mute wire, connect the Brown wire to it. If the
mute wire is not connected, the radio will turn off when OnStar is activated.
• Connect the Gray wire to the right front positive speaker output.
• Connect the Gray/Black wire to the right front negative speaker output.
• Connect the White wire to the left front positive speaker output.
• Connect the White/Black wire to the left front negative speaker output.
• Connect the Green wire to the left rear positive speaker output.
• Connect the Green/Black wire to the left rear negative speaker output.
• Connect the Purple wire to the right rear positive speaker output.
• Connect the Purple/Black wire to the right rear negative output.
The following (3) wires are only for multimedia/navigation radios that require these wires .
• Connect the Blue/Pink wire to the VSS/speed sense wire.
• Connect the Green/Purple wire to the reverse wire.
• Connect the Light Green wire to the parking brake wire
From the GMOS-04 harness to the aftermarket radio:
• Connect the Black wire to the ground wire.
• Connect the Yellow wire to the battery wire.
• If the aftermarket radio has an illumination wire, connect the Orange wire to it.
Note: Only connect this wire if it is populated on the factory wiring harness.
Otherwise use the Orange/White wire on the 16-pin harness with stripped leads.
• The Black/Yellow wire is used for OnStar level adjustment for models that
do not come equipped with steering wheel controls. Refer to the OnStar level
Adjustment section for further instructions.
•
Tape off and disregard the following (1) wire, it will not be used in this application :
Orange/White.
Continued on the next page