I have a kenwood amp and sub not sure on the models I can get them if need be. I have been running the system for quite some time now probably about 2-3 years. Within the last year the sub started to go off when I would hit bumps in my car. I took it to Best Buy and tey rewired the whole car, new wires new connectors. It fixed the problme for about a month and now it is doing it again? Any ideas as to why?