Apparently, a previous owner or mechanic has replaced the block on my tractor to a 9N block. Along with that, the tractor has been rewired for the front mounted distributor without an actual wiring harness, and converted to 12 Volts. The alternator has apparently failed due to exposure to the elements. Now I have nothing but questions, and I am not sure what to do about it. The cheapest thing I can do is to replace it, but the same thing will happen again. Why would anyone change to 12 volts when the original 6 volt system worked for years? It should have been simple to maintain the original system. I think the starter is original, but the coil is held on with a plastic tie. There is an unused electrical block/gang and one that is used (also held on with plastic ties). The lights and amp gauge wires have been cut along with the starter button connection. At this point I am considering putting it back to 6 volts. There are plenty of 6 to 12 volt conversions that have taken place, but no guide for going the other way. Anyone have some thoughts on this?