Bare wires bleeding 12vdc into a wet bilge can destroy big metal parts in a hurry.I hauled last month and replaced zinc in the shaft had to haul yesterday and the new zinc is half gone. Only 15 days in the water and all at sea not in a marina.
what should i look for?
Good point. Wouldn't be the first time a boat was splashed and the yard didn't actually do what one asked, or even what they said they did.+1 on the electrical problem. Assuming it actually was changed out!