I bought a John Deere 210, And I cut grass with it many times and then the PTO Clutch shorted out. I tried fixing the clutch that didn't work. I tired disconnecting it and that didn't work. So I rewired the whole tractor as if it was a manual pto clutch tractor. That didn't work. So I got a new coil, points and condenser, new key switch and light switch. Now when I hook the battery up it pegs negative. Any ideas on what to look for or test for to find the problem?