I have another amp that I am going to try inplace of the Sub amp tonight. IDFK I am going crazy here Driving around with my car half ripped apart. I will check my Ground too I just do not know why when I hook the branched RCA Jacks from the Stock amp that everything sounds good. But when I do that I can not even get my Sub Amp to turn on I am going ot open that thing up and check it if the other amp works right.