4
GMOS-04
From the 24-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-04.
• 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.
Connections to be made
Connections to be made
For 2005-up Corvette only
(Figure A)
:
• A relay is needed in the 2005-up Corvette. You will need to cut the Blue/White wire in
half between the 18-way Molex and 24-way Gray connector.
• Connect the Blue/White wire coming from the 18-way Molex to pin 85 of the relay.
• Connect the Blue/White wire coming from the 24-way connector to pin 30 of the relay.
• Connect pin 86 of the relay to ground.
• Connect pin 87 of the relay to fused 12-volt constant wire. Using tape or a wire, tie
securely the relay from moving around the dash.
• When completed, plug the 18-pin harness into the GMOS-04.
