Hi, I recently blew one of the 3 fuses in the fuse block next to the circuit breaker. I replaced it and it blew immediately. I replaced it with a 30 amp fuse while watching it and it took a minute to blow. The repair manual says they are for the ECM, fuel injectors, and fuel pump, but doesn't say which is which. I've had the boat for a few years and the fuse that blew was 25 amps and the other two are 20 amps, if that helps. Does anyone have a wiring diagram or experience with this? thanks , Matt