this is blowing the fuse as soon as you put it in..you dont have to hit the start button to blow the fuse..does this still sound like the same problem and should the trim work when the safety switch is not attached to machine?was blowindg fuse in the rear box as soon as you tried to put one in..when i unplugged the harness from the front of the magneto housing it quit blowing the rear fuse..you can jump the starter manually and it turns over fine..