i have my ground on a bolt on the leftside backseat.. i know its better to weld it onto the chassis but alot of shit already is probably. Im hearing alot of feedback.. like mainly the sound of my car when i accelerate thru the front speakers only. And when i come to a stop you still can hear the engine running thru the speakers.. not so loud but its annoying.. should i get a ground loop isolator? any ideas?
