so I went out and took everything apart and double checked wires and everything seems normal. nothing loose or pinched. If something was shorting out wouldn't it make noise regardless of whether the car was on or not? I only get the noise after turning on the car. once I shut if off it is gone. its a high pitched sound that sounds like when your ears are ringing. if I back the gain on the amp to about a quarter is almost goes away and can only hear if I put my ear by the speaker. Amp is set to receive speaker level inputs.