This is my first boat, a 96 chris craft concept. Everything worked great on the water a couple of days ago, but today as I was cleaning I went to turn the radio on and discovered it not working. I then tried my other switches and everything's dead. Everything but the blower, that is. Any suggestions on how to begin troubleshooting? It a brand new battery, and I would first guess a dead battery, but the blowers working. I'm new to boating and such issues and would really appreciate any insight into where I should begin looking.