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.
• Connect the Orange/White wire to the illumination wire. If the aftermarket radio has no
illumination wire, tape off the Orange/White wire.
• 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 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.
The following (3) wires are for multimedia/navigation radios that require these wires.
• Connect the Light Green wire to the parking brake wire.
• Connect the Blue/Pink wire to the speed sense wire.
• Connect the Green/Purple wire to the reverse wire.
2
CONNECTIONS TO BE MADE
From the GMOS-LAN-09 harness:
(a) 16-pin harness to the aftermarket radio:
• Connect the Yellow wire to the 12-volt battery wire.
• Connect the Black wire to the ground wire.
• 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.
(b) 22-pin harness to the aftermarket radio:
• The Black/Yellow wire is for the OnStar volume adjustment. This will be discussed in the
• The DIN connector is for use with the optional AX-LCD (sold separately). This will give you
(c) 20-pin harness to the aftermarket radio:
• Connect the White RCA to the aftermarket radio's left Audio AUX in.
• Connect the Red RCA to the aftermarket radio's right Audio AUX in.
• Connect the Yellow RCA jack to the backup camera input jack.
OnStar Level Adjustment section of this instruction.
the option of changing the settings in your personalization menu.
Note: To retain the factory 3.5mm jack, the radio must have an Audio AUX in.
Note: Only connect this jack if the RPO code I03 is present in the "Service Parts
Identification" sticker located inside the glove box. If this code is not present, use the
BACKUPCAM-3 harness (sold separately) to retain the factory backup camera.