Switched 12 Volt Power Supply for Radio Install
billyc80
03-14-2004, 10:30 PM
I have a 2004 GMC Yukon and I am attempting to install an aftermarket CD player. The wiring harness I have provides constant 12 volt batter power but no accessory wire. I am looking for a switched 12 volt power source somewhere in the dash. So far I have only found constant battery sources. Does anyone know where I could find a switched 12 V power source for the accessory wire of my CD player?
mx6rrr
03-14-2004, 11:42 PM
alot of newer GMs are like that, if you take dash near your feet apart the is a large wiring harness, called an ignition harness, it comes from steering colum to above peddles than it goes everywhere.... :) if you look between the large harness and the key cylinder there should be a thick brown and a thick orange wire, dont cut into them, expecially before you test the wire! TEST THE WIRE FIRST!!!! (use a multimeter connect blk to ground, test for voltage and touch the red (+) wire to the orange (or brown) thick wire with key off, should read 0 v, then turn to acc, should read 12v or so....now splice into the wire with a nice pair of stripers, a pick tool, some good electrical take and about 6 feet of wire. there is you acc wire.
option 2: have it professionally installed.
option 3: hook a wire up to the yellow wire on radio harness and use a switch to turn it on and off.
hope this helps you a bit, sorry if its confusing...hard to explain with out actually looking at it, and make sure YOU TEST THE WIRE FIRST AND DONT CUT IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!
option 2: have it professionally installed.
option 3: hook a wire up to the yellow wire on radio harness and use a switch to turn it on and off.
hope this helps you a bit, sorry if its confusing...hard to explain with out actually looking at it, and make sure YOU TEST THE WIRE FIRST AND DONT CUT IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!
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