From the 16-pin harness to the aftermarket radio:
• Connect the Red wire to the ignition/accessory wire.
• Connect the Orange/White wire to the illumination wire. If the aftermarket
radio has no illumination wire just tape off the Orange/White wire.
• Connect the Blue/White wire to the amp turn on 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.
The following wires are for aftermarket multimedia/navigation radios that provide
these wires (if not tape them off and disregard them):
• Connect the light Green wire to the parking brake wire of the aftermarket
navigation radio.
• Connect the Blue/Pink wire to the VSS or speed sense wire of the aftermarket
navigation radio.
GMOS-044
Connections to be made
• Connect the Green/Purple wire to the reverse wire of the aftermarket
• Plug the 16-pin harness into the GMOS-044.
From the 18-pin harness to the aftermarket radio:
• Connect the Black wire with the ring terminal to the radio chassis with ISO
• The Black/Yellow wire and additional 12-pin harness will be discussed later
• Plug the 18-pin harness into the GMOS-044.
From the 44-pin harness to the aftermarket radio:
• Connect the Yellow wire to the 12-volt constant/battery wire of the
• Connect the Black wire to the ground wire.
• Connect the Green wire to the left rear positive speaker output.
2
navigation radio.
screw that is supplied with radio.
Note: This wire must be connected as instructed otherwise the interface
will not be functional.
in this manual.
aftermarket radio.