my rcas seem fine? ive bin considering a new set but they did a crap job running wires every where i hav no idea where this feed back could b coming from NOW i did find a ground they decided to run wires underneath the passenger seat and near the ecu is a ground drilled to the floor, yet therz still feed back but some wires R unequal they soldered them together an taped it id if that was a great idea either but the radio i dont think is the actual problem?