GMOS-05
2
TOOLS REQUIRED FOR INSTALLATION
WIRING UP THE GMOS-05
* Important: Before beginning any of the following, disconnect the negative battery terminal to prevent
accidental short circuit.
**Note: The ignition power source of most factory GM radios keep the radio on until one of the doors is
opened. This is called the R.A.P. (retained accessory power). The GMOS-05 is designed to retain
this feature.
FOR AFTERMARKET RADIO ONLY:
CONNECTIONS TO BE MADE ON THE 14 PIN HARNESS:
1.
Connect the red wire to the ignition/accessory wire of the aftermarket radio.
2.
Connect the orange/white wire to the illumination wire of the aftermarket radio. If the aftermarket
radio has no illumination wire just tape off the orange wire.
3.
Connect the blue/white wire to the amp turn on wire of the aftermarket radio and to the blue/white wire
in the 32 pin harness.
4.
Connect the white wire to the left front positive speaker output of the aftermarket radio.
5. Connect the white/black wire to the left front negative speaker output of the aftermarket radio.
6. Connect the gray wire to the right front positive speaker output of the aftermarket radio.
7. Connect the gray/black wire to the right front negative speaker output of the aftermarket radio.
8. Connect the brown wire to the mute wire of the aftermarket radio. If the after market radio does not have
a Mute wire, tape up the brown wire.
The following wires on the 14 pin harness are for the aftermarket radios that have navigation built in:
1. Connect the green wire to the parking brake wire of the aftermarket navigation radio.
• Cutting Tool • Tape • Crimping Tool
• Connectors (ie: butt-connectors, bell caps, etc.)
3. Connect the green/purple wire to the reverse wire of the aftermarket navigation radio.
When completed,
plug the 14 pin harness into the GMOS-05.
(See wiring diagram on page 6)
CONNECTIONS TO BE MADE ON THE 32 PIN GM HARNESS:
1.
Connect the yellow wire to the radio’s 12 volt battery or memory wire.
2.
Connect the
blue wire to the radio’s antenna turn on wire.
3.
Connect the
Orange wire to the illumination wire of the aftermarket radio. If the aftermarket radio has no
illumination wire just tape off the
orange wire.