Chase down the current leak!!! Don't forget the nearby boats and the docks, shorepower and dock lights if there are any present.
Also, check out "Boat Owners Mechanical & Electrical Manual" by Calder for additional information. When I worked at West Marine I used to Xerox a section for a customer who had a specific problem such as you and just give it to him. Then I told his wife to get him the book for Christmas.
Give your wife a hand with the Christmas shopping and buy a copy for her to "give" to you!!!
