GM ONSTAR CLASS II DATA BUS INTERFACE
©Copyright 2004-2007 Metra Electronics Corporatio
n
1-800-221-0932 www.metraonline.co
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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