my brother hooked up the battery backwords and now all kinds of trouble. first i had no power at all in the boat. ran a temporary wire from the battery to the ignition so i could run the boat. I had to replace the fuse to operate the trim. however no alternator. all of a sudden everything worked just like that. there is a big plug on top of the motor that must power everything on the boat cause when i move it around it cuts the power out completely. I took the plug out and cleaned the connections and it seemed to work better. however the alternater still doesnt work correcty. sometimes it charges and sometimes it doesnt. before i spend 400 bucks on a alternator i want to be sure that its not a connection somewhere. i hooked a gauge up to the battery and was only getting about 11.5 volts and the alternator was getting power.(test light). I am wondering if maybe the alternator is good however it just isnt charging the battery due to a connection somewhere. are there fuses i should look for. i haved worked on cars for years however im lost here. btw i lost my oil pressure gauge for no reason today. the electric in my boat is a total mess right now. where should i be looking for fuses for the alternator and so on....
