Is there something wrong with this diagram? I replaced an amp and moved the second battery. I wired everything like it was (I think). Why would there be 2 positives and 2 negatives going to the second battery. Everything is playing fine but there is a loud pop when I turn the system off. When I cut power with the perko, there is noise in the speakers. Can a perko go bad? Is this right and I have a grounding issue elsewhere? Any help would be appreciated. Thanks