I recently bought a 3020 gas burner , someone had made an attempt to convert from a generator to an alternator on this tractor , I rewired the entire system and put the generator and regulator back on , positive ground , bought a new OEM ignition switch , and when I hook the wire that goes from the terminal on the ignition switch marked " F " to the terminal on the generator marked " GEN " the tractor will not shut off , even when I disconnect the battery cables , if I do not install the wire mentioned to the switch , the ignition switch works like it should . Any advice is much appreciated...