I posted here earlier about the trouble I was having with my 8N not having spark. I was given some pointers and in checking everything I found that my new coil was bad. I replace the coil, ignition, resistors, spark plugs, spark plug wires, distributor cap, points and condenser and it fired right up and ran better than it has in years! A wonder what a complete tune up will do. Everything was fine until today, after mowing a couple of acres behind the neighbor's, the tractor wouldn't restart to go home. We checked for spark and I was back to nothing at the plug! After I got home my neighbor called and said he had rewired the system using only 1 resistor (12 volt conversion) and it started just fine. Doesn't the 12 volt conversion require two resistors? What am I doing wrong?