GM ONSTAR CLASS II DATA BUS INTERFACE

GMOS-04

INSTALLATION INSTRUCTIONS

*READ IMPORTANT WARNING ON PAGE 1 BEFORE ATTEMPTING ANY INSTALLATION

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.

SEE APPLICATIONS LIST INSIDE

TOOLS REQUIRED FOR INSTALLATION

Cutting Tool • Tape • Crimping Tool

Connectors (ie: butt-connectors, bell caps, etc.)

REV. 03/19//07

INSTGMOS-04

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©Copyright 2004-2007 Metra Electronics Corporation

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Metra Electronics GMOS-04 installation instructions