PTswim41 10+ year member
Member
There is a high pitched whining noise coming from my speakers. I disconnected my amp and subs and the noise is still there. I am assuming it is from a poor head unit ground. Right now I have the black ground wire coming from the head unit spliced to the black ground wire coming from the crutchfield wiring harness. What should I do to the ground wires to get rid of the whining noise?
