1996 Audi a4 Deck Wiring

Hey, the wiring in my dash is pretty hacked up and I'm wondering how I can identify the power/ground. I think that's all I really need because I'm going to run signal to amps for speaker. Thanks for any advice.

Battery----------WHITE/ yellow Accesory---------WHITE/ red Ground-----------Black Illumination-----RED / black Dimmer-----------Red Power Antenna----Yellow/White Ampturn on ------Yellow/White i don't know about this one but that is the listing for this one and the one above LF Speaker+ -----White LF Speaker- -----Orange RF Speaker+ -----Yellow RF Speaker- -----Brown LR Speaker+ -----Red LR Speaker- -----Green RR Speaker+ -----Blue RR Speaker- -----Black Amp Location Mounted to the bracket in the right side of the trunk But if you look there are a few that have the same color but that is the best i can do to get you in the right direction so good luck with that hope it helps you or you could just use the power and ground and ignition and rewire everything else in the car like the speakers