The F101 fuse in load center 1 on my JD 6410 Cab tractor failed this afternoon. I replaced it and the tractor cranked and I drove it about 200 yard before it shut down again. I replaced the fuse two more times and each time it failed as soon as the key was turned on.The fuse is labled Main switch (terminal Bat). I am guessing that I have a short some where on the hot wire from the battery to the switch. Has anyone out there experienced this problem and if so what was the cause?