I wanna wire in an after market stereo, the factory one is completely shot and the front speakers are blown and there are no rear speakers. I don't want to buy the wiring harness for it i just wanna rewire the whole thing my self. If any one has or knows where i could find wiring diagram for it that would be great. Thanx.

You can try the information at AllDataDiy for their demo vehicle - 2003 Bonneville and see if it has what you need. Otherwise, a subscription to them for your vehicle, or a factory service manual would be your best bet.

Radio/Stereo