KyleBechtold 5,000+ posts
Quit reading this
you have an ipod or cd player handy? if so go to radioshack and buy a 3.5mm headphone jack to rca converter... plug it into your amps and see if it still does it.. if so h/u is fine.. it has something to do with either the amp/power/ground wires.. if the noise goes away it is either the rca outs from the h.u or the h/u itself whether the wiring or just a bad one