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 not used in this application.
Installing the GMOS-100
1. With all the connections completed, plug the 22 and 16-pin harnesses into
the GMOS-100.
2. Plug the 30-pin GM harness into the vehicle side harness, and plug the aftermarket
radio harness into the aftermarket radio.
3. Reconnect the negative battery terminal.
4. Initialize the interface by cycling the key by (1) turning the ignition "on" for 30
seconds, (2) then back off, and then (3) back on again to test the radio. Doing this
will also program the internal ASWC.
Section 1: GM LAN 29
1.3