Yea it's like a constant bad radio station high pitched noise. I turned the gain down and the speakers got lower with the sound, turned it up and the sound of the speakers got louder but so did the noise. If i turn the sound up it starts to pop loud, i got scared. h:

I rewired the power to the cap back to the amp like in the "after" diagram i drew and i also relocated the ground to another location at the huge screw under the back seat into the frame and still the same thing.

Its not in a ground loop cause i've got both amps and cap at the same ground so it can't be that either. My boy said to double check if the rca's and power wire are touching in the trunk so im gonna go check that now, i've tried everything else. :hs: