I have a 2002 GS201 Fun Deck with a Yamaha 150HP 2 stroke. I'm troubleshooting electrical problems (things not working at all). I've pulled a couple breakers to test and noticed that none of them are marked with amperage. Is there a baseline or standard for the circuits in a boat? i.e., are horns 5A? Are bilge pumps 10A? etc.. I don't want to over or undersize. Any guidelines or schematics will be GREATLY appreciated. I've scoured the internet search engines and have not found any specifics.