I was down at the boat yesterday and it is 115v. From what I'd found online it looked like an E10 base, but it's actually 11mm. We have a dining room light fixture with Candelabra bulbs and it's the same, so it is an E12. Thank you for the Candelabra tip.
So, it looks like it's a T3 with an E12...
I'll check the voltage in the next day or so and see where we're at. Thanks for the tip on the socket change. I'd prefer to not get into major surgery just for a small light... unless I absolutely have to.
We have a '79 Yamaha 33 and I'm trying to find a replacement bulb for the shore power panel. It shows as a 220V, but that doesn't make sense to me, other than it will not be as bright. Does anyone know what the correct bulb is for the panel?