i have a 2003 a6 3.0 with "audi symphony" these are the wires i actually have that plugs in the the head unit. there might be more but i really need to know what these wires do . . .i am trying to put a pc in the car but wanted to make sure everything is functional before i get my amp, screen, wires . . .


I know which ones are power and Right and left speakers

I don't know how to power the rear speakers . . .do i have to amp it, then plug it into these wires? . .. what are the "com" and lines by the rear speaker wires functions?

is there any way i can still use the steering wheel functions?

thanks in advance

 

You can't find anything out with that diagram, you need to buy a bentley manual that will have all the wiring designations. I have no idea what that diagram says because they don't say where the leads go.