GMOS-09
From the 32-pin harness:
• ConnecttheYellow wiretotheradio’s12-voltbatteryormemorywire.
• ConnecttheBlackwiretotheradio’sgroundwire.
• Plugthe14-pinharnessintotheGMOS-09
• TheBlack/YellowwireisfortheOnStarvolumeadjustment.Thiswillbediscussedin
theOnStarLevelAdjustmentsectionofthisinstruction.
Connections to be made
• Withallconnectionscompletedtotheaftermarketradio,plugthe24-and12-pin
harnessesintothevehicleswiringharnesses.
• Reconnectthenegativebatteryterminal.
• Cyclethekey,byturningtheignitiononfor30seconds.Thenoffandon
againtotesttheradio.
Installing the GMOS-09
1) Turntheignitiononifnotalready,andthenturntheradioontoverifythattheradio
works.Checkbalanceandfadercontrolsforproperoperation.
2) PushtheOnStarbutton(ifequipped)toverifyOnStarisworking.Theradiowillshutoffor
mute,dependingiftheBrownwireonthe16-pinharnessisconnected,andOnStarwill
beheardthroughthefrontspeakers.TurnoffOnStarandtheradiowillturnbackon.
Testing the GMOS-09