Pontoon Electronics

I have a Fisher 200 pontoon, 2001. I turned on all the lights for the first time, then tried adding the radio, and everything shut down except motor, ignition, gauges and power tilt. No lights, no radio. I assumed a fuse, swapped all fuses and didn't see anything blown visually and swapping didn't get anything to work. I searched for a main fuse or something from the battery and can't find one. It seems like the way it shut down, it has to be a fuse or breaker problem, but can't find some sort of main breaker. Help please?