I have hooked my car pc up electrically several ways with relays and switches and such and I have have a bad case of engine noise. I have a good ground, my sound cables to my amp are ran different than the electric wires. I just basically want to be able to turn my PC on or off remotely without having to crank up of shut off my car. Also would an inline battery isolater help to keep the altenater noise out of my speakers? Can anyone explain a way to do this?