I have a 03 Craftsman 15.5 hp riding lawn mower. The 30amp fuse between the solenoid and ignition switch keeps blowing when I try to start it. I changed the solenoid and the fuse. My battery was low so I used an extra car battery to jump it. I turned the key and heard the fuse pop. I suspect the switch but not sure. If anyone can help me that would be great.