I have a 2000 gun that has shore power. The shore power has been working fine all winter. Plugged it in for the first time at a marina and didn't get anything on my gauge inside. We checked the cable and it works fine. Is there a circuit breaker for the 110 system? If so, where?

You might want to check the wire connection to the 110V socket on the boat. They're prone to corrosion problems.

I'll check that...thx

If I remember right, I think the switch itself on the panel is the breaker. You did check that right?