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  1. #1

    Default Wiring diagram/wire colors

    Anyone have the wiring diagram for a 2003 Sierra with the piece of **** Bose stuff in it?

    GM seems to generally be:

    Tan,grey = Front+
    Green, light green = Front-

    Blue, Light blue = Rear+
    something else, another wierd ass color = Rear-

  2. #2


    I think that I've seen a diagram around somewhere. I might have to scan it and upload a link if I can't find it online.

  3. #3


    I had to put an after market head unit it mine to hook up my subs. those converters wont work because of the factory amp. I changed to after market head unit and everything worked fine. You just lose the speed change volume with new head deck witch is no big deal. The colors u mentioned are corect though. But as soon as u try to hook an adapter to them the factory amp shutsdown thats why it loses sound. Change to after market head unit and you'll be ok.
    02 2500HD Crew Cab 4x4
    6.0L with 6 sp Auto Tranny
    33x12.50 Pro Comp Xterains
    Dual Flowmaster Exhaust
    AFE Stage II intake system
    JVC Head Unit
    800watt Jensen AMP
    2x 10" Power Bass M class subs
    2 farid cap

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