Originally Posted by CharlieJ
With this bit of info, review Post #11...it certainly appears that you experienced a text book example of stray current
corrosion. Look at the tank level indicator for the aluminum
I blamed the thur problem from last year on the boat being in a marina all winter before I got it. But I still decided to unbond the fittings when I fixed the problem. Since I think I then connected the fuel tank
ground to the engine
instead of to that fitting (which I now are learned was the wrong thing to do anyway and that the fuel
tyank never should have been connected to a fitting of a commion ground, but to the keel bolts
instead) and the zincs corroded so fast; I am believing a problem related to the fuel tank
somehow picking up or sending out a current.
I'll put a meter on that connection sometime during the winter projects.
The more you look at electrical
stuff on a boat it confuese you. Impossible to tell what the builder
did verse some owner. Probably why people rewire their boats, just so they know where everything goes.