Ground Noise after Avic D3 Install
Bought an AVIC-D3 off of another forum. It was prewired for his B5 A4. I have installed it into my C5 A6. Seem to have a grounding issue. I hear engine noise through the radio and have double checked the wiring as well as added a ground with no luck. Any suggestions? This installed in Symphony II Vehicle with Bose setup. Seems like the grounding issue has something to do with the RCA's. Any advise?