GM ONSTAR CLASS II DATA BUS INTERFACE

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GM ONSTAR CLASS II DATA BUS INTERFACE GMOS-05 Installation Instructions 1-800-221-0932 ©COPYRIGHT 2004-2008 METRA ELECTRONICS CORPORATION Rev.08-19-08 www.axxessinterface.com The GMOS-05 is designed to be used in vehicles listed below to retain Onstar and the warning chimes that are lost when the OEM radio is removed,and also provide a 12 volt accessory output for proper after- market radio operation.THE GMOS-05 NOW PROVIDES MUTE,PARK- ING BRAKE,VSS OR SPEED SENSE,AND A REVERSE OUTPUT TO MAKE INSTALLING AN AFTERMARKET NAVIGATIONAL RADIO SIMPLER AND LESS TIME CONSUMING. *READ IMPORTANT WARNING ON PAGE 1 BEFORE ATTEMPTING ANY INSTALLATION *NOTE:This inteface will also work in vehicles listed below that are NOT equipped with Onstar. *NOTE:This inteface will NOT work to retain factory amplifiers.

BUICK LeSabre 2000-05 OLDSMOBILE Aurora 2001-03 PONTIAC Bonneville 2000-05 APPLIC A TIONS INTERF A CE COMPONENTS "GMOS-05 Data Interface "14 pin harness with stripped leads "12 pin harness to 32 pin GM harness with stripped leads GMOS-05 1 *READ IMPORTANT WARNING BEFORE ATTEMPTING ANY INSTALLATION *IMPORT ANT W ARNING 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 ... more. less.

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 CONSUL T A TECHNICIAN WHO DOES HA VE THIS KNOWLEDGE AND UNDERST ANDING. 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 SAFE- TY 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. K NOWLEDGE IS P OWER E nhanceyour installation and fabrication skillsby enrolling in the most recognizedandrespected mobile electronics school in our industry. Log onto www.installerinstitute.comorcall 800-354-6782 for more informationandtake steps toward abetter tomorrow. GMOS-05 2 TOOLS REQUIRED FOR INST ALLA TION WIRING UP THE GMOS-05 *Important: Before beginning an yof the following, disconnect the negative batter yterminal to prevent accidental short circuit. * *Note: The ignition power source of most f actor yGM radios keep the radio on until one of the doors is opened. This is called the R.A.P . (retained accessor ypower). The GMOS-05 is designed to retain this feature. FOR AFTERMARKET RADIO ONL Y : 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 aMutewire, 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 diagr am on page 6) CONNECTIONS TO BE MADE ON THE 32 PIN GM HARNESS: 1. Connect the yellow wire to the radio 9s 12 volt battery or memory wire. 2. Connect the blue wire to the radio 9s 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. GMOS-05 3 4. Connect the black wire to the radio 9s ground wire. 5. Connect the green wire to the radio 9s left rear positive speaker output. 6. Connect the green/black wire to the radio 9s left rear negative speaker output. 7. Connect the purple wire to the radio 9s right rear positive speaker output. 8. Connect the purple/black wire to the radio 9s right rear negative speaker output. 9. Tape up the Blue/White wires as they are not used. 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 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.White NOT USED 5.White/black NOT USED 6. Gray NOT USED 7. Gray/black NOT USED 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. 2. Connect the Blue/Pink wire to the VSS or speed sense wire of the aftermarket navigation radio. 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. CONNECTIONS TO BE MADE ON THE 32 PIN GM HARNESS: 1. Connect the yellow wire to the radio 9s12 volt battery or memory wire. 2. Connect the black wire to the radio 9s ground wire. 3. Connect the blue wire to the amp turn on wire of the aftermarket radio and to the blue wire of the 14 pin harness. 4. Connect the green wire to the amplifier 9s left rear positive speaker output. FOR AFTERMARKET RADIO AND AMPLIFIER (See wiring diagr am on page 6) GMOS-05 5. Connect the the green/black wire to the amplifier 9s left rear negative speaker output. 6. Connect the purple wire to the amplifier 9s right rear positive speaker output. 7. Connect the purple/black wire to the amplifier 9s right rear negative speaker output. 8. The Orange and Orange/White wires are not used.Please tape up wires to avoid a short circuit output. 9. Cut the white wire about half way between the two plugs.Connect the white wire from the 32 pin plug to amplifier 9s left front positive speaker output wire.Connect the white wire from the 12 pin plug to the positive speaker wire of the Metra SP-2003 or equivalent. 10. Cut the white/black wire about half way between the two plugs.Connect the white/black wire from the 32 pin plug to amplifier 9s left front negative speaker output wire.Connect the white/black wire from the 12 pin plug to the negative speaker wire of the Metra SP-2003 or equivalent. 11. Cut the gray wire about half way between the two plugs.Connect the gray wire from the 32 pin plug to ampli- fier 9s right front positive speaker output wire.Connect the gray wire from the 12 pin plug to the positive speakerwire of the Metra SP-2003 or equivalent. 12. Cut the gray/black wire about half way between the two plugs.Connect the gray/black wire from the 32 pin plug to amplifier 9s right front negative speaker output wire.Connect the gray/black wire from the 12 pin plug to the negative speaker wire of the Metra SP-2003 or equivalent. Note: If only one SP-2003 is used tape up the gray wires that would normally connect to the second SP-2003 to avoid a short circuit. 4 GMOS-05 5 INST ALLING THE GMOS-05 1. With all connections completed to the aftermarket radio, plug the GM32 and GM12 pin harnesses into the vehicles wiring harnesses. 2. Reconnect the negative battery terminal. 3. Cycle the key by turning the ignition on then back off, then on again to test the radio. TESTING THE GMOS-05 1. Turn the ignition on if not already,and then turn the radio on to verify that the radio works.Check the balance and fader control of the radio for proper operation. 2. Push the Onstar button (if so equipped) to verify Onstar is working properly.The radio will shut off or mute, depending if the brown wire on the 14 pin harness is connected,and Onstar will be heard through the front speakers.Turn off Onstar and the radio will turn back on. CHIME V OLUME ADJUSTMENT To adjust the chime volume,use a small screwdriver to rotate the potentiometer clockwise to make the chime louder and counterclockwise to make it softer.The potentiometer is located on the side of the GMOS-05. ONST AR LE VEL ADJUSTMENT To adjust the Onstar volume level find the brown wire on the 12 pin harness.Press the blue Onstar button,while the voice is talking tap the Brown wire to ground.Each time the Brown wire sees ground the volume level will change.There are 3 volume settings,low,medium,and high.The volume setting will be set until the Brown wire istapped to ground again. 6 GMOS-05 BLK RADIO YEL AFTERMARKETRADIOANDAMPLIFIERWIRING SP-2003 SP-2003 OPTIONAL REQUIRED GM OS-05 RF RF LF LF - + - + CHIMEVOLUME ADJUSTMENT RED GREEN BLUE/PINK BLUE/WHITE GREEN/PURPLE BROWN ORANGE/WHITE 14 PIN 12 PIN BLUE/WHITE R R- RR+ LR- LLR+ GM32PIN TOAFTERMARKET REARAMPLIFIER TOAFTERMARKET FRONTAMPLIFIER BROWN RF RF LF LF - + - + X X X X GMOS-05 INSTRUCTIONS 1-800-221-0932 REV. 08/19/08 © COPYRIGHT 2004-2008 METRA ELECTRONICS CORPORATION INSTGMOS-05 www.axxessinterface.com FINAL WIRING CONNECTIONS Make wiring connections using the EIA color code chart shown below and the instructions included with the head unit.Metra recommends making connec- tions as shown below; Strip,Splice,Solder,Tape.Isolate and individually tape off ends of any unused wires to prevent electrical short circuit. METRA/EIA WIRING CODE 12V Ignition / Acc. . . . . . . . . . Red 12V Batt / Memory.........Yellow Ground. . . . . . . . . . . . . . . . . . Black* Power Antenna. . . . . . . . . . . . Blue Amp Turn-On.............Blue / White Amp Ground..............Black / White Illumination. . . . . . . . . . . . . . Orange Dimmer. . . . . . . . . . . . . . . . . Orange / White Right Front (+). . . . . . . . . . . . Gray Right Front (-).............Gray / Black Left Front (+). . . . . . . . . . . . . White Left Front (-). . . . . . . . . . . . . . White / Black Right Rear (+)............Violet Right Rear (-). . . . . . . . . . . . . Violet / Black Left Rear (+).............Green Left Rear (-). . . . . . . . . . . . . . Green / Black STRIP SPLICE SOLDER TAPE

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