Re: Electrical Diagram
Look at the positive terminal for a short stop, it is a small square that is hooled directly to the battery, use a ohm meter to check for contuinuity, they are a fuse so once they go they need replaced.
As Silvertip said, boats aren't like cars so there is no wiring diagram, they simply don't make enough of them to justify the cost.
Alot of boats I have seen have ciruit breakers right on the dash, apparently not yours.