On my boat there is a 50A breaker between the battery and fuse panel. What about stereo, blower, depth sounder? Do those work, if so, then I don't think it would be the 50A I'm talking about. If it was that 50A, then nothing that goes through that fuse panel would work.
If the 50 amp breaker was tripped the helm would have no power preventing the engine from starting.
All the items not working are on separate fused circuits so they are either completely independent issues or a common negative is loose. Time to break out the voltmeter and check for voltage at each switch then fixture.
electrical issue
Linear Mode
