I was riding my 400 yesterday and it ran fine all day. Started up fine everytime and everything. But when I got back to the truck and cut it off, it would not start back up. It was not even trying to start, the headlights wouldn't work either. While I was inspecting the battery today after work, I noticed this fuse holder right in front of the battery. I pulled the cap off and there are two fuses. I think one is a spare, but I am not sure. I pulled them both out and one was blown, the spare one was fine. So I put the good one in the spot where the blown one was and as soon as I turned the key it blew also. Before any one says this, yes they were both 15 amp fuses. I am not sure what is going on. Please help.