Metra Electronics GMOS-04 User's Manual
Contents
1. GM ONSTAR CLASS II DATA BUS INTERFACE Copyright 2004 2007 Metra Electronics Corporation 1 800 221 0932 www metraonline com GMOS 04 INSTALLATION INSTRUCTIONS READ IMPORTANT WARNING ON PAGE 1 BEFORE ATTEMPTING ANY INSTALLATION SEE APPLICATIONS LIST INSIDE THE GMOS 04 IS DESIGNED TO BE USED WITH VEHI CLES THAT HAVE A FACTORY AMPLIFIED SYSTEM INCLUDING THE BOSE AUDIO SYSTEMS BESIDES RETAINING THE ONSTAR SYSTEM THE GMOS 04 WILL ALSO RETAIN THE WARNING CHIMES THAT WILL BE LOST WHEN THE FACTORY RADIO IS REMOVED THE GMOS 04 WILL ALSO PROVIDE A 12 VOLT SWITCHED WIRE FOR PROPER RADIO OPERATION THE GMOS 04 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 REV 03 19 07 INSTGMOS 04 Cutting Tool Tape Crimping Tool Connectors ie butt connectors bell caps etc TOOLS REQUIRED FOR INSTALLATION 1 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 UNDER STAND THE INSTRUCTIONS SO AS TO PROPERLY AND SAFELY COMPLETE THE INSTALLATION YOU SHOULD CONSULT A TECHNICIAN WHO DOES HAVE THIS KNOWLEDGE AND UNDERSTANDING FAILU2. RE 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 GMOS 04 BUICK ALLURE 2005 07 CENTURY 2004 05 RAINIER 2004 07 RENDEZVOUS 2002 07 TERRAZA 2005 07 CADILLAC ESCALADE 2003 06 ESCALADE EXT 2003 06 CHEVROLET AVALANCHE 2003 06 CAVALIER 2000 05 IMPALA 2000 05 MALIBU 2002 03 MALIBU CLASSIC 2004 MONTE CARLO 2000 05 SILVERADO 2003 06 SILVERADO CLASSIC 2007 SSR 2003 06 SUBURBAN 2003 06 TAHOE 2003 06 TRAILBLAZER 2002 07 VENTURE 2000 05 GMC ENVOY 2002 07 SAVANA 2003 07 SIERRA 2003 06 YUKON XL DENALI 2003 06 HUMMER H2 2003 07 H3 2006 07 ISUZU ASCENDER 2003 07 OLDSMOBILE ALERO 2001 04 BRAVADA 2002 05 INTRIGUE 2002 SILOUETTE 2000 04 PONTIAC AZTEC 2001 05 GRAND AM 2001 05 GRAND PRIX 2004 06 SUNFIRE 2000 05 SAAB 9 7x 2005 07 4 Connect the Green Purple wire to the reverse wire of the aftermarket radio When completed plug the 14 pin harness into the GMOS 04 INSTALLING THE GMOS 04 1 With all connections completed to the aftermarket radio plug the 24 pin and the 12 pin connectors into the vehicles corresponding wiring harnesses 2 Reconnect t
3. THEN TAPED UP PLEASE REFER TO THE ONSTAR LEVEL AJUSTMENT SECTION FOR FURTHER DETAILS ABOUT THE BROWN WIRE CONNECTIONS TO BE MADE ON THE 24 PIN GRAY HARNESS 1 Connect the yellow wire to the radio s 12V battery or memory wire 2 Connect the red wire to the radio s ignition or accessory wire 3 Connect the black wire to the radio s ground wire 4 Connect the orange wire to the radio s illumination wire If the wire is not present tape up wire 5 Connect the orange white wire to the radio s dimmer wire If the wire is not present tape up wire When completed plug the 16 pin harness into the GMOS 04 4 APPLICATIONS INTERFACE COMPONENTS CONNECTIONS TO BE MADE ON THE 14 PIN HARNESS 1 Connect the blue white wire to the radio s AMP turn on wire 2 Connect the red wire to the radio s Igniton or accessory wire 3 Connect the RCA cables to the radio s RCA outputs If no RCA outputs are available use the Metra line output converter part ALO 648 SOLD SEPARATELY 4 The white RCA goes to the left front RCA output of the radio 5 The gray RCA goes to the front right RCA output of the radio 6 The green RCA goes to the left rear RCA output of the radio 7 The purple RCA goes to the right rear RCA output of the radio 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 rad
4. he negative battery terminal 3 Cycle the key by turning the ignition on then back off then back on again to test the radio TESTING THE GMOS 04 1 Turn the ignition on then the radio to verify the radio works Check balance and fader controls for proper operation If controls are backwards check to see if the RCA s are in the correct location 2 Push the Onstar button to verify Onstar is working the radio will shut off and Onstar will be heard through the left front speaker Turn off Onstar and the radio will turn back on ONSTAR LEVEL ADJUSTMENT To adjust the Onstar volume level find the BROWN wire that you cut on the 16 pin harness you will use the BROWN wire 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 ter minal to the brown wire The volume will change one level every time the switch is pressed GMOS 04 IMPORTANT THE BROWN LOOP ON THE 16 PIN HARNESS MUST BE CUT
5. io 2 Connect the Green wire to the parking brake wire of the aftermarket radio 3 Connect the Blue Pink wire to the VSS or speed sense wire of the aftermarket radio 3 GMOS 04 Data Interface 14 pin harness with RCA S 16 pin harness to 24 pin GM harness and 12 pin Onstar harness WIRING UP THE GMOS 04 Important Before beginning any of the following disconnect the negative battery terminal to prevent accidental short circuit Note The ignition power source of most GM vehicles keep the radio on until one of the doors is opened This is called the R A P retained accessory power The GMOS 04 is designed to retain this feature 2 GMOS 04 TOUBLESHOOTING Chime Too Loud Soft There are some instances where the chime is too loud or too soft 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 04 3 Open up the GMOS 04 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 04 and reconnect wire harnesses Distorted Audio Output When using the GMOS 04 with a radio that has a high pre out
6. 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 04 3 Open up the GMOS 04 by squeezing the sides of the top cover 4 Locate the potentiometer next to the 10 pin board mounted connector located at the end of the GMOS 04 5 Taking a small flat headed screwdriver turn the potentiometer counter clockwise to lower the input level going to the factory amplifier 6 After adjustment replace top cover of GMOS 04 and reconnect wire harnesses 5
Download Pdf Manuals
Related Search