I am installing an aftermarket amp to the factory bose concert system in my 98 A8 Quattro. Does anybody either have a wiring diagram or know the colors of the signal wires I need to solder the rcas to on the amp harness? Any input will be greatly appreciated.

 

if ya dont know how to do it go to best buy and have em do it u need a line out converter no soldering needed nor the head unit out