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GMOS-LAN-02

From the 30 pin harness:

• Connect the 

Yellow

 wire to the radio’s 12 volt battery or memory wire.

• Connect the 

Black

 wire to the radio’s ground wire.

• Plug the 14 pin harness into the GMOS-LAN-02
• The 

Black/Yellow

 wire is for the OnStar volume adjustment. This will be discussed in 

the OnStar Level Adjustment section of this instruction.

The 12 pin harness (ASWC plug) will be discussed later in the manual.

BACKUPCAM harness:

This harness is used when you are trying to retain the factory Back up camera. Plug the 

yellow RCA of the BACKUPCAM harness to your aftermarket radios video input.

Connections to be made

• With all connections completed to the aftermarket radio, plug the 30 pin harnesses into 

the vehicles wiring harnesses. 

• Reconnect the negative battery terminal.
• Cycle the key, by turning the ignition on for 30 seconds. Then off and on again to test the 

radio.

Installing the GMOS-LAN-02

1)  Turn the ignition on if not already, and then turn the radio on to verify that the radio 

works. Check balance and fader controls for proper operation.

2)  Push the OnStar button (if equipped) to verify OnStar is working. The radio will shut off or 

mute, depending if the 

Brown

 wire on the 16 pin harness is connected, and Onstar will 

be heard through the front speakers. Turn off Onstar and the radio will turn back on.

Testing the GMOS-LAN-02

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