tonight i went fishing and was soaked so i decided to turn the heater on. when i turned it on a fuse blew but the heater stayed on. i soon noticed that the fuse was for the turn signals. why would the heater blow that fuse and keep running? i put in a new fuse and can use the turn signals but if i turn the heater on it blows. i dont want to go with a bigger fuse for saftey reasons. all suggestions welcome.