GMOS-08 - CatalogRack
GMOS-08
GMOS-08
GM ONSTAR CLASS II DATA BUS INTERFACE
FINAL WIRING CONNECTIONS
* IMPORTANT WARNING
THIS PRODUCT INCLUDES INSTRUCTIONS FOR INSTALLATION WHICH
MUST BE CAREFULLY FOLLOWED. THE INSTRUCTIONS ARE WORDED
IN SUCH A MANNER TO ASSUME THAT THE INSTALLER IS CAPABLE
OF COMPLETING THESE TYPE OF ELECTRONIC INSTALLATIONS.
IF YOU ARE UNCLEAR AS TO WHAT YOU ARE INSTRUCTED TO DO OR
BELIEVE THAT YOU DO NOT UNDERSTAND THE INSTRUCTIONS SO AS
TO PROPERLY AND SAFELY COMPLETE THE INSTALLATION YOU SHOULD
CONSULT A TECHNICIAN WHO DOES HAVE THIS KNOWLEDGE AND
UNDERSTANDING. FAILURE TO FOLLOW THESE INSTRUCTIONS
CAREFULLY AND TO INSTALL THE INTERFACE AS DESCRIBED COULD
CAUSE HARM TO THE VEHICLE OR TO SAFETY SYSTEMS ON THE
VEHICLE. INTERFERENCE WITH CERTAIN SAFETY SYSTEMS COULD
CAUSE HARM TO PERSONS AS WELL. IF YOU HAVE ANY QUESTIONS
IN THIS REGARD PLEASE CALL THE HELP LINE OR THE METRA AT
1-800-221-0932 FOR ASSISTANCE.
Make wiring connections using the EIA color code chart shown below and the
instructions included with the head unit. Metra recommends making connections
as shown below; Strip, Splice, Solder, Tape. Isolate and individually tape off ends
of any unused wires to prevent electrical short circuit.
GMOS-08
INSTALLATION INSTRUCTIONS
(For Amplified Sound Systems Only)
METRA/EIA WIRING CODE
The GMOS-08 IS DESIGNED TO BE USED WITH VEHI-
12V Ignition / Acc. . . . . . . . . . Red
CLES THAT HAVE A FACTORY AMPLIFIED SYSTEM.
BESIDES RETAINING THE ONSTAR SYSTEM, THE GMOS08 WILL ALSO RETAIN THE WARNING CHIMES THAT WILL
BE LOST WHEN THE FACTORY RADIO IS REMOVED, AND
ALSO PROVIDE A 12 VOLT ACCESSORY WIRE FOR PROPER RADIO OPERATION. THE GMOS-08 NOW PROVIDES
MUTE, PARKING BRAKE, VSS OR SPEED SENSE, AND A
REVERSE OUTPUT TO MAKE INSTALLING AN AFTERMARKET NAVIGATIONAL RADIO SIMPLER AND LESS TIME
CONSUMING.
12V Batt / Memory. . . . . . . . . Yellow
Ground. . . . . . . . . . . . . . . . . . Black*
Power Antenna. . . . . . . . . . . . Blue
Amp Turn-On . . . . . . . . . . . . . Blue / White
STRIP
Amp Ground. . . . . . . . . . . . . . Black / White
Illumination . . . . . . . . . . . . . . Orange
SPLICE
Dimmer . . . . . . . . . . . . . . . . . Orange / White
Right Front (+) . . . . . . . . . . . . Gray
SOLDER
* READ IMPORTANT WARNING ON PAGE 1
BEFORE ATTEMPTING ANY INSTALLATION
Right Front (-). . . . . . . . . . . . . Gray / Black
Left Front (+) . . . . . . . . . . . . . White
TAPE
(Note: This interface will also work in vehicles
listed below that are not equipped with Onstar)
Left Front (-). . . . . . . . . . . . . . White / Black
Right Rear (+) . . . . . . . . . . . . Violet
APPLICATIONS
Right Rear (-) . . . . . . . . . . . . . Violet / Black
CHEVY
Equinox 2005-06
Left Rear (+) . . . . . . . . . . . . . Green
PONTIAC
Torrent 2006
Left Rear (-) . . . . . . . . . . . . . . Green / Black
INTERFACE COMPONENTS
• GMOS-08 Data Interface
• 14 pin harness with rca’s
• 16 pin harness to 24 pin GM
harness and 12 pin Onstar harness
REV. 03/23/07
1-800-221-0932
1
INSTGMOS-08
www.metraonline.com
©Copyright 2004-2007 Metra Electronics Corporation
1-800-221-0932
www.metraonline.com
©Copyright 2004-2007 Metra Electronics Corporation
GMOS-08
GMOS-08
GM ONSTAR CLASS II DATA BUS INTERFACE
FINAL WIRING CONNECTIONS
* IMPORTANT WARNING
THIS PRODUCT INCLUDES INSTRUCTIONS FOR INSTALLATION WHICH
MUST BE CAREFULLY FOLLOWED. THE INSTRUCTIONS ARE WORDED
IN SUCH A MANNER TO ASSUME THAT THE INSTALLER IS CAPABLE
OF COMPLETING THESE TYPE OF ELECTRONIC INSTALLATIONS.
IF YOU ARE UNCLEAR AS TO WHAT YOU ARE INSTRUCTED TO DO OR
BELIEVE THAT YOU DO NOT UNDERSTAND THE INSTRUCTIONS SO AS
TO PROPERLY AND SAFELY COMPLETE THE INSTALLATION YOU SHOULD
CONSULT A TECHNICIAN WHO DOES HAVE THIS KNOWLEDGE AND
UNDERSTANDING. FAILURE TO FOLLOW THESE INSTRUCTIONS
CAREFULLY AND TO INSTALL THE INTERFACE AS DESCRIBED COULD
CAUSE HARM TO THE VEHICLE OR TO SAFETY SYSTEMS ON THE
VEHICLE. INTERFERENCE WITH CERTAIN SAFETY SYSTEMS COULD
CAUSE HARM TO PERSONS AS WELL. IF YOU HAVE ANY QUESTIONS
IN THIS REGARD PLEASE CALL THE HELP LINE OR THE METRA AT
1-800-221-0932 FOR ASSISTANCE.
Make wiring connections using the EIA color code chart shown below and the
instructions included with the head unit. Metra recommends making connections
as shown below; Strip, Splice, Solder, Tape. Isolate and individually tape off ends
of any unused wires to prevent electrical short circuit.
GMOS-08
INSTALLATION INSTRUCTIONS
(For Amplified Sound Systems Only)
METRA/EIA WIRING CODE
The GMOS-08 IS DESIGNED TO BE USED WITH VEHI-
12V Ignition / Acc. . . . . . . . . . Red
CLES THAT HAVE A FACTORY AMPLIFIED SYSTEM.
BESIDES RETAINING THE ONSTAR SYSTEM, THE GMOS08 WILL ALSO RETAIN THE WARNING CHIMES THAT WILL
BE LOST WHEN THE FACTORY RADIO IS REMOVED, AND
ALSO PROVIDE A 12 VOLT ACCESSORY WIRE FOR PROPER RADIO OPERATION. THE GMOS-08 NOW PROVIDES
MUTE, PARKING BRAKE, VSS OR SPEED SENSE, AND A
REVERSE OUTPUT TO MAKE INSTALLING AN AFTERMARKET NAVIGATIONAL RADIO SIMPLER AND LESS TIME
CONSUMING.
12V Batt / Memory. . . . . . . . . Yellow
Ground. . . . . . . . . . . . . . . . . . Black*
Power Antenna. . . . . . . . . . . . Blue
Amp Turn-On . . . . . . . . . . . . . Blue / White
STRIP
Amp Ground. . . . . . . . . . . . . . Black / White
Illumination . . . . . . . . . . . . . . Orange
SPLICE
Dimmer . . . . . . . . . . . . . . . . . Orange / White
Right Front (+) . . . . . . . . . . . . Gray
SOLDER
* READ IMPORTANT WARNING ON PAGE 1
BEFORE ATTEMPTING ANY INSTALLATION
Right Front (-). . . . . . . . . . . . . Gray / Black
Left Front (+) . . . . . . . . . . . . . White
TAPE
(Note: This interface will also work in vehicles
listed below that are not equipped with Onstar)
Left Front (-). . . . . . . . . . . . . . White / Black
Right Rear (+) . . . . . . . . . . . . Violet
APPLICATIONS
Right Rear (-) . . . . . . . . . . . . . Violet / Black
CHEVY
Equinox 2005-06
Left Rear (+) . . . . . . . . . . . . . Green
PONTIAC
Torrent 2006
Left Rear (-) . . . . . . . . . . . . . . Green / Black
INTERFACE COMPONENTS
• GMOS-08 Data Interface
• 14 pin harness with rca’s
• 16 pin harness to 24 pin GM
harness and 12 pin Onstar harness
REV. 03/23/07
1-800-221-0932
1
INSTGMOS-08
www.metraonline.com
©Copyright 2004-2007 Metra Electronics Corporation
1-800-221-0932
www.metraonline.com
©Copyright 2004-2007 Metra Electronics Corporation
GMOS-08
TOOLS REQUIRED FOR INSTALLATION
• Cutting Tool • Tape • Crimping Tool
• Connectors (ie: butt-connectors, bell caps, etc.)
The following wires on the 14 pin harness are for the aftermarket radios that
have navigation built in:
1. Connect the Brown wire to the mute wire of the aftermarket radio.
2. Connect the Green wire to the parking brake wire of the aftermarket radio.
WIRING UP THE GMOS-08
* Important: Before beginning any of the following, disconnect the negative
battery terminal to prevent accidental short circuit.
3. Connect the Blue/Pink wire to the VSS or speed sense wire of the aftermarket
radio.
4. Connect the Green/Purple wire to the reverse wire of the aftermarket radio.
**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-08 is designed to retain this feature.
When completed, plug the 14 pin harness into the GMOS-08.
IMPORTANT!
1. With all connections completed to the aftermarket radio, plug the 24 and 12
pin harnesses into the vehicles coresponding wiring harnesses.
THE BROWN LOOP ON THE 16 PIN HARNESS MUST BE CUT, THEN TAPED UP.
PLEASE REFER TO THE ONSTAR LEVEL ADJUSTMENT SECTION FOR FURTHER
DETAILS ABOUT THE BROWN WIRE.
CONNECTIONS TO BE MADE ON THE
24 PIN LT. BLUE HARNESS:
1. Connect the yellow wire to the radio’s 12 volt battery or memory wire.
2. Connect the black wire to the radio’s ground wire.
When completed, plug the 16 pin harness into the GMOS-08.
INSTALLING THE GMOS-08
2. Connect the red wire to the radio’s ignition or accesory wire.
TO adjust the Onstar volume level find the BROWN wire that you cut on the 16th pin
harness, you wil use the BROWN that is by itself, with no other wire with it. Push the
blue Onstar button, while the voice is speaking tap the BROWN wire to ground.
There are 4 volume settings for Onstar, once the 4th setting is reached and the
BROWN wire is tapped to ground it will automatically go back to the first volume
setting. Once the volume is set it will stay at that volume until the BROWN wire is
tapped to ground again. This can be set during installation and then left alone.
If user adjustment is desired, a momentary contact switch (sold separately) can be
added. Connect one terminal from the switch to ground and the other terminal to
the brown wire. The volume will change one level every time the switch is pressed.
7. The purple rca goes to the right rear rca output of the radio.
2
3. Open up the GMOS-08 by squeezing the sides of the top cover
4. Locate the potentiometer facing up on the circuit board, this is the
Chime potentiometer
5. Taking a small flat headed screwdriver, turn the potentiometer clockwise
to decrease the chime level; turning the potentiometer counterclockwise
will increase the chime level
6. After adjustment replace top cover of GMOS-08 and reconnect
wire harnesses.
1. Turn the ignition on then the radio on to verify that the radio works. Check the
balance and fader controls of the radio for proper operation. If controls are
backwards, check to see if the rca’s are in the correct location.
ONSTAR LEVEL ADJUSMENT
6. The green rca goes to the the left rear rca output of the radio.
2. Disconnect the 14 pin and 16 pin wire harnesses from the GMOS-08
TESTING THE GMOS-08
1. Connect the blue/white wire to the radio’s amp turn on wire.
5. The gray rca goes to the front right rca output of the radio.
1. Make sure the ignition is turned to the “off” position.
3. Cycle the key by turning the ignition on then back off, then on again to
test the radio.
CONNECTIONS TO BE MADE ON THE
14 PIN HARNESS:
4. The white rca goes to the front left rca output of the radio.
Chime Too Loud/Soft:
There are some instances where the chime is too loud or too soft.
To resolve this follow these steps:
2. Reconnect the negative battery terminal.
2. Push the Onstar button (if equipped) to verify Onstar is working. The radio
will shut off or mute, depending if the brown wire is connected, and Onstar will
be heard through the left front speaker. Turn off Onstar and the radio will turn
back on.
3. Connect the rca cables to the radio’s rca outputs. if no rca outputs are available, use the Metra Line output converter part # ALOC648 (sold separately).
TROUBLESHOOTING:
3
Distorted Audio Output:
When using the GMOS-08 with a radio that has a high pre-out voltage,
usually greater than 2 volts, the audio signal may become distorted.
To resolve this follow these steps:
1. Make sure the ignition is turned to the “off” position
2. Disconnect the 14 pin and 16 pin wire harnesses from the GMOS-08
3. Open up the GMOS-08 by squeezing the sides of the top cover
4. Locate the potentiometer next to the 14 pin board mounted connector
located at the end of the GMOS-08
5. Taking a small flat headed screwdriver, turn the potentiometer counterclockwise to lower the input level going to the factory amplifier
6. After adjustment replace top cover of GMOS-08 and reconnect wire
harnesses.
4
GMOS-08
TOOLS REQUIRED FOR INSTALLATION
• Cutting Tool • Tape • Crimping Tool
• Connectors (ie: butt-connectors, bell caps, etc.)
The following wires on the 14 pin harness are for the aftermarket radios that
have navigation built in:
1. Connect the Brown wire to the mute wire of the aftermarket radio.
2. Connect the Green wire to the parking brake wire of the aftermarket radio.
WIRING UP THE GMOS-08
* Important: Before beginning any of the following, disconnect the negative
battery terminal to prevent accidental short circuit.
3. Connect the Blue/Pink wire to the VSS or speed sense wire of the aftermarket
radio.
4. Connect the Green/Purple wire to the reverse wire of the aftermarket radio.
**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-08 is designed to retain this feature.
When completed, plug the 14 pin harness into the GMOS-08.
IMPORTANT!
1. With all connections completed to the aftermarket radio, plug the 24 and 12
pin harnesses into the vehicles coresponding wiring harnesses.
THE BROWN LOOP ON THE 16 PIN HARNESS MUST BE CUT, THEN TAPED UP.
PLEASE REFER TO THE ONSTAR LEVEL ADJUSTMENT SECTION FOR FURTHER
DETAILS ABOUT THE BROWN WIRE.
CONNECTIONS TO BE MADE ON THE
24 PIN LT. BLUE HARNESS:
1. Connect the yellow wire to the radio’s 12 volt battery or memory wire.
2. Connect the black wire to the radio’s ground wire.
When completed, plug the 16 pin harness into the GMOS-08.
INSTALLING THE GMOS-08
2. Connect the red wire to the radio’s ignition or accesory wire.
TO adjust the Onstar volume level find the BROWN wire that you cut on the 16th pin
harness, you wil use the BROWN that is by itself, with no other wire with it. Push the
blue Onstar button, while the voice is speaking tap the BROWN wire to ground.
There are 4 volume settings for Onstar, once the 4th setting is reached and the
BROWN wire is tapped to ground it will automatically go back to the first volume
setting. Once the volume is set it will stay at that volume until the BROWN wire is
tapped to ground again. This can be set during installation and then left alone.
If user adjustment is desired, a momentary contact switch (sold separately) can be
added. Connect one terminal from the switch to ground and the other terminal to
the brown wire. The volume will change one level every time the switch is pressed.
7. The purple rca goes to the right rear rca output of the radio.
2
3. Open up the GMOS-08 by squeezing the sides of the top cover
4. Locate the potentiometer facing up on the circuit board, this is the
Chime potentiometer
5. Taking a small flat headed screwdriver, turn the potentiometer clockwise
to decrease the chime level; turning the potentiometer counterclockwise
will increase the chime level
6. After adjustment replace top cover of GMOS-08 and reconnect
wire harnesses.
1. Turn the ignition on then the radio on to verify that the radio works. Check the
balance and fader controls of the radio for proper operation. If controls are
backwards, check to see if the rca’s are in the correct location.
ONSTAR LEVEL ADJUSMENT
6. The green rca goes to the the left rear rca output of the radio.
2. Disconnect the 14 pin and 16 pin wire harnesses from the GMOS-08
TESTING THE GMOS-08
1. Connect the blue/white wire to the radio’s amp turn on wire.
5. The gray rca goes to the front right rca output of the radio.
1. Make sure the ignition is turned to the “off” position.
3. Cycle the key by turning the ignition on then back off, then on again to
test the radio.
CONNECTIONS TO BE MADE ON THE
14 PIN HARNESS:
4. The white rca goes to the front left rca output of the radio.
Chime Too Loud/Soft:
There are some instances where the chime is too loud or too soft.
To resolve this follow these steps:
2. Reconnect the negative battery terminal.
2. Push the Onstar button (if equipped) to verify Onstar is working. The radio
will shut off or mute, depending if the brown wire is connected, and Onstar will
be heard through the left front speaker. Turn off Onstar and the radio will turn
back on.
3. Connect the rca cables to the radio’s rca outputs. if no rca outputs are available, use the Metra Line output converter part # ALOC648 (sold separately).
TROUBLESHOOTING:
3
Distorted Audio Output:
When using the GMOS-08 with a radio that has a high pre-out voltage,
usually greater than 2 volts, the audio signal may become distorted.
To resolve this follow these steps:
1. Make sure the ignition is turned to the “off” position
2. Disconnect the 14 pin and 16 pin wire harnesses from the GMOS-08
3. Open up the GMOS-08 by squeezing the sides of the top cover
4. Locate the potentiometer next to the 14 pin board mounted connector
located at the end of the GMOS-08
5. Taking a small flat headed screwdriver, turn the potentiometer counterclockwise to lower the input level going to the factory amplifier
6. After adjustment replace top cover of GMOS-08 and reconnect wire
harnesses.
4
GMOS-08
TOOLS REQUIRED FOR INSTALLATION
• Cutting Tool • Tape • Crimping Tool
• Connectors (ie: butt-connectors, bell caps, etc.)
The following wires on the 14 pin harness are for the aftermarket radios that
have navigation built in:
1. Connect the Brown wire to the mute wire of the aftermarket radio.
2. Connect the Green wire to the parking brake wire of the aftermarket radio.
WIRING UP THE GMOS-08
* Important: Before beginning any of the following, disconnect the negative
battery terminal to prevent accidental short circuit.
3. Connect the Blue/Pink wire to the VSS or speed sense wire of the aftermarket
radio.
4. Connect the Green/Purple wire to the reverse wire of the aftermarket radio.
**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-08 is designed to retain this feature.
When completed, plug the 14 pin harness into the GMOS-08.
IMPORTANT!
1. With all connections completed to the aftermarket radio, plug the 24 and 12
pin harnesses into the vehicles coresponding wiring harnesses.
THE BROWN LOOP ON THE 16 PIN HARNESS MUST BE CUT, THEN TAPED UP.
PLEASE REFER TO THE ONSTAR LEVEL ADJUSTMENT SECTION FOR FURTHER
DETAILS ABOUT THE BROWN WIRE.
CONNECTIONS TO BE MADE ON THE
24 PIN LT. BLUE HARNESS:
1. Connect the yellow wire to the radio’s 12 volt battery or memory wire.
2. Connect the black wire to the radio’s ground wire.
When completed, plug the 16 pin harness into the GMOS-08.
INSTALLING THE GMOS-08
2. Connect the red wire to the radio’s ignition or accesory wire.
TO adjust the Onstar volume level find the BROWN wire that you cut on the 16th pin
harness, you wil use the BROWN that is by itself, with no other wire with it. Push the
blue Onstar button, while the voice is speaking tap the BROWN wire to ground.
There are 4 volume settings for Onstar, once the 4th setting is reached and the
BROWN wire is tapped to ground it will automatically go back to the first volume
setting. Once the volume is set it will stay at that volume until the BROWN wire is
tapped to ground again. This can be set during installation and then left alone.
If user adjustment is desired, a momentary contact switch (sold separately) can be
added. Connect one terminal from the switch to ground and the other terminal to
the brown wire. The volume will change one level every time the switch is pressed.
7. The purple rca goes to the right rear rca output of the radio.
2
3. Open up the GMOS-08 by squeezing the sides of the top cover
4. Locate the potentiometer facing up on the circuit board, this is the
Chime potentiometer
5. Taking a small flat headed screwdriver, turn the potentiometer clockwise
to decrease the chime level; turning the potentiometer counterclockwise
will increase the chime level
6. After adjustment replace top cover of GMOS-08 and reconnect
wire harnesses.
1. Turn the ignition on then the radio on to verify that the radio works. Check the
balance and fader controls of the radio for proper operation. If controls are
backwards, check to see if the rca’s are in the correct location.
ONSTAR LEVEL ADJUSMENT
6. The green rca goes to the the left rear rca output of the radio.
2. Disconnect the 14 pin and 16 pin wire harnesses from the GMOS-08
TESTING THE GMOS-08
1. Connect the blue/white wire to the radio’s amp turn on wire.
5. The gray rca goes to the front right rca output of the radio.
1. Make sure the ignition is turned to the “off” position.
3. Cycle the key by turning the ignition on then back off, then on again to
test the radio.
CONNECTIONS TO BE MADE ON THE
14 PIN HARNESS:
4. The white rca goes to the front left rca output of the radio.
Chime Too Loud/Soft:
There are some instances where the chime is too loud or too soft.
To resolve this follow these steps:
2. Reconnect the negative battery terminal.
2. Push the Onstar button (if equipped) to verify Onstar is working. The radio
will shut off or mute, depending if the brown wire is connected, and Onstar will
be heard through the left front speaker. Turn off Onstar and the radio will turn
back on.
3. Connect the rca cables to the radio’s rca outputs. if no rca outputs are available, use the Metra Line output converter part # ALOC648 (sold separately).
TROUBLESHOOTING:
3
Distorted Audio Output:
When using the GMOS-08 with a radio that has a high pre-out voltage,
usually greater than 2 volts, the audio signal may become distorted.
To resolve this follow these steps:
1. Make sure the ignition is turned to the “off” position
2. Disconnect the 14 pin and 16 pin wire harnesses from the GMOS-08
3. Open up the GMOS-08 by squeezing the sides of the top cover
4. Locate the potentiometer next to the 14 pin board mounted connector
located at the end of the GMOS-08
5. Taking a small flat headed screwdriver, turn the potentiometer counterclockwise to lower the input level going to the factory amplifier
6. After adjustment replace top cover of GMOS-08 and reconnect wire
harnesses.
4
GMOS-08
GMOS-08
GM ONSTAR CLASS II DATA BUS INTERFACE
FINAL WIRING CONNECTIONS
* IMPORTANT WARNING
THIS PRODUCT INCLUDES INSTRUCTIONS FOR INSTALLATION WHICH
MUST BE CAREFULLY FOLLOWED. THE INSTRUCTIONS ARE WORDED
IN SUCH A MANNER TO ASSUME THAT THE INSTALLER IS CAPABLE
OF COMPLETING THESE TYPE OF ELECTRONIC INSTALLATIONS.
IF YOU ARE UNCLEAR AS TO WHAT YOU ARE INSTRUCTED TO DO OR
BELIEVE THAT YOU DO NOT UNDERSTAND THE INSTRUCTIONS SO AS
TO PROPERLY AND SAFELY COMPLETE THE INSTALLATION YOU SHOULD
CONSULT A TECHNICIAN WHO DOES HAVE THIS KNOWLEDGE AND
UNDERSTANDING. FAILURE TO FOLLOW THESE INSTRUCTIONS
CAREFULLY AND TO INSTALL THE INTERFACE AS DESCRIBED COULD
CAUSE HARM TO THE VEHICLE OR TO SAFETY SYSTEMS ON THE
VEHICLE. INTERFERENCE WITH CERTAIN SAFETY SYSTEMS COULD
CAUSE HARM TO PERSONS AS WELL. IF YOU HAVE ANY QUESTIONS
IN THIS REGARD PLEASE CALL THE HELP LINE OR THE METRA AT
1-800-221-0932 FOR ASSISTANCE.
Make wiring connections using the EIA color code chart shown below and the
instructions included with the head unit. Metra recommends making connections
as shown below; Strip, Splice, Solder, Tape. Isolate and individually tape off ends
of any unused wires to prevent electrical short circuit.
GMOS-08
INSTALLATION INSTRUCTIONS
(For Amplified Sound Systems Only)
METRA/EIA WIRING CODE
The GMOS-08 IS DESIGNED TO BE USED WITH VEHI-
12V Ignition / Acc. . . . . . . . . . Red
CLES THAT HAVE A FACTORY AMPLIFIED SYSTEM.
BESIDES RETAINING THE ONSTAR SYSTEM, THE GMOS08 WILL ALSO RETAIN THE WARNING CHIMES THAT WILL
BE LOST WHEN THE FACTORY RADIO IS REMOVED, AND
ALSO PROVIDE A 12 VOLT ACCESSORY WIRE FOR PROPER RADIO OPERATION. THE GMOS-08 NOW PROVIDES
MUTE, PARKING BRAKE, VSS OR SPEED SENSE, AND A
REVERSE OUTPUT TO MAKE INSTALLING AN AFTERMARKET NAVIGATIONAL RADIO SIMPLER AND LESS TIME
CONSUMING.
12V Batt / Memory. . . . . . . . . Yellow
Ground. . . . . . . . . . . . . . . . . . Black*
Power Antenna. . . . . . . . . . . . Blue
Amp Turn-On . . . . . . . . . . . . . Blue / White
STRIP
Amp Ground. . . . . . . . . . . . . . Black / White
Illumination . . . . . . . . . . . . . . Orange
SPLICE
Dimmer . . . . . . . . . . . . . . . . . Orange / White
Right Front (+) . . . . . . . . . . . . Gray
SOLDER
* READ IMPORTANT WARNING ON PAGE 1
BEFORE ATTEMPTING ANY INSTALLATION
Right Front (-). . . . . . . . . . . . . Gray / Black
Left Front (+) . . . . . . . . . . . . . White
TAPE
(Note: This interface will also work in vehicles
listed below that are not equipped with Onstar)
Left Front (-). . . . . . . . . . . . . . White / Black
Right Rear (+) . . . . . . . . . . . . Violet
APPLICATIONS
Right Rear (-) . . . . . . . . . . . . . Violet / Black
CHEVY
Equinox 2005-06
Left Rear (+) . . . . . . . . . . . . . Green
PONTIAC
Torrent 2006
Left Rear (-) . . . . . . . . . . . . . . Green / Black
INTERFACE COMPONENTS
• GMOS-08 Data Interface
• 14 pin harness with rca’s
• 16 pin harness to 24 pin GM
harness and 12 pin Onstar harness
REV. 03/23/07
1-800-221-0932
1
INSTGMOS-08
www.metraonline.com
©Copyright 2004-2007 Metra Electronics Corporation
1-800-221-0932
www.metraonline.com
©Copyright 2004-2007 Metra Electronics Corporation
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