yeah, one amp is under my passanger seat, other is in the trunk. As far as the grounds, once i hooked everything up and found the problem, I re-did all my grounds, like sanding them down and "polishing" them. This didn't help at all. As far as finding a thick piece of metal, the first ground I had under my seat was very thick, part of the frame that the seat bolts on to, but does not share a hole with the seat or anything like that. When I had trouble, I relocated it to the "floor" of the car, and drilled straight down through...sanded and polised that ground too....this is really starting to disturb me. I wanted to do the install right, i had my car in peices in my garage for over a week, and during that time i drove my other car. I took my time, did everything very detailed, and didn't cut any corners at all...this is why i'm asking for the experts help on this one