I have a 2009 236. I had wet sounds tower speakers installed. since they were installed I keep getting a fault in the amp providing power to the boat speakers. I am also getting what I believe is alternator feedback in the tower speakers. Not sure if the issues are related but recently the boat has started blowing fuel pump fuses. I can switch them out and can get some to last about 15-20 mins before it blows but sometimes it blows automatically. It started when I was pulling someone and crossed a wake. I talked to Nautique and they said it sounded like a grounding issue. Does this sound like a possibility? If so, where can I look to inspect the ground attachments to see if they are loose?