Axxess GMOS-13 Instrucciones De Instalación página 3

Connections to be made
From the 18-pin Axxess harness to 16-pin GM 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 18-pin Axxess harness into the GMOS-13.
• The Black/Yellow wire is for the OnStar volume adjustment. This will be
discussed in the OnStar Level Adjustment section of this instruction.
From the 16-pin GM harness:
• Connect the Blue wire to the aftermarket radio's antenna turn on wire.
The 12-pin harness (ASWC plug) will be discussed later in the manual.
Installing the GMOS-13
• With all connections completed to the aftermarket radio, plug the (2) 16-pin
harnesses into the vehicle wiring harnesses.
• Reconnect the negative battery terminal.
• Cycle the key, by turning the ignition on for 30 seconds. Then off and on again
to test the radio.
GMOS-13
Testing the GMOS-13
• Turn the ignition "on". Then turn the aftermarket radio "on".
• Press the OnStar button, the radio should turn "off" (radio will mute if mute wire
is connected) and you should hear OnStar.
• Push the OnStar cancel button and the radio should come back "on".
OnStar Level Adjustment
• To adjust the OnStar volume level find the Black/Yellow wire on the
18-pin Axxess harness.
• Push the blue OnStar button, while the voice is speaking tap the Black/Yellow
wire to ground.
• Once the volume is set it will stay at that volume until the Black/Yellow wire is
tapped to the ground again.
This can be set during installation and then left alone. If adjustment is
desired, the user may also tap "Volume Up" or "Down" on the steering wheel
(if equipped) to adjust the OnStar level.
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