From the 16-pin harness with stripped leads to the aftermarket radio:
• Connect the (2) Red wires to the accessory wire.
Note: If installing the ASWC-1, there will be an accessory wire in the
12-pin harness to connect as well.
• Cap off and disregard the Orange/White wire, it will not be used in this application.
• 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 Gray wire to the right front positive speaker output.
• Connect the Gray/Black wire to the right 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 speaker output.
• Connect the Blue/White wire to the amp turn-on wire.
Note: This wire must be connected to turn the interface on.
• Connect the Brown wire to the mute wire. If the aftermarket radio does not
have a Mute wire, tape up the Brown wire. If the Brown wire is not connected,
the radio will turn off when OnStar is activated.
GMOS-06
Connections to be made
The following wires are for the aftermarket radios that have navigation built in:
From the GMOS-06 harness to the aftermarket radio:
12-pin pre-wired ASWC-1 harness:
2
• Connect the Light Green wire to the parking brake wire (if applicable).
• Connect the Blue/Pink wire to the speed sense wire (if applicable).
• Connect the Green/Purple wire to the reverse wire (if applicable).
• Connect the Black wire to the ground wire.
• Connect the Yellow wire to the 12-volt battery wire.
• Connect the Blue wire to the power antenna wire.
• Connect the Orange/White wire to the illumination wire. If the aftermarket
radio has no illumination wire, tape off the Orange/White wire.
• The (3) Black/White wires are to be grounded only if engine noise is present.
• The Black/Yellow wire is for the OnStar volume adjustment. This will be
discussed in the OnStar Level Adjustment section.
This harness is to be used along with the optional ASWC-1 (not included) to
retain steering wheel audio controls. If the ASWC-1 is not being used, disregard
this harness. If it will be used, please refer to the ASWC-1 instructions for radio
connections and programming.
Note: Disregard the harness that comes with the ASWC-1.
To the aftermarket radio:
• Connect the Red wire to the accessory wire