Connections to be made
For amplified systems:
• Connect the Violet wire to the right rear positive wire of the aftermarket radio.
• Connect the Violet/Black wire to the right rear negative wire of the aftermarket radio.
• Connect the Green wire to the left rear positive wire of the aftermarket radio.
• Connect the Green/Black wire to the left rear negative wire of the aftermarket radio.
For non-amplified systems:
• Cut the resistors from the Green, Green/Black, Purple, Purple/Black right below
the heat shrink.
• Connect the Violet wire to the right rear positive wire of the aftermarket radio.
• Connect the Violet/Black wire to the right rear negative wire of the aftermarket radio.
• Connect the Green wire to the left rear positive wire of the aftermarket radio.
• Connect the Green/Black wire to the left rear negative wire of the aftermarket radio.
• The DIN plug is to be connected to the optional XIA-LCD screen if satellite or RSE
is being retained.
3. From the 12-way harness:
• Connect the Blue/Pink wire to the aftermarket radios VSS (if populated on
factory side).
• Connect the RCA's to the AUX-in on the aftermarket radio (if equipped).
Installing the GMOS-100
1. With all the connections completed, plug the 24, 22, and 12-pin harnesses
into the GMOS-100.
2. Plug the 24 and 12-pin GM harness into the vehicle side harness, and plug the
aftermarket radio harness into the aftermarket radio.
3. Reconnect the negative battery terminal.
Cycle the key by turning the ignition on for 30 seconds, then back off, then back on
again to test the radio.
CLASSII-100
5