Recent content by mattkim1337

I tried grounding the head unit through both the factory harness wire and to bare sheet metal (using a multimeter to find a ground point) and I still had the whine.

Hi, after many days of checking and moving my grounds around, I have finally found the source of my speaker whine. Originally, I had my Pioneer AVH-4200NEX connected to the factory ACC and ground harness. This caused speaker whine whenever I accelerated or braked (I'm driving a hybrid car). I...