A tractor from that model year will have a generator unless it was replaced with an alternator at sometime in it's life. If it has a generator it could be the field terminal is grounded to the frame somehow. If the field terminal on the generator is shorted to the frame the generator will run wild and put out way too much voltage. If the lights are turned on the excess voltage will blow them out. They get real bright and then poof.
Check the wires going to the voltage regulator. The 'F' terminal on the regulator should have a wire going to the 'F' terminal on the generator. The 'A' terminal on the regulator should go to the 'A' terminal on the generator and the 'B' or 'BATT' terminal on the regulator goes to the ammeter and should be hot at all times. Sometimes the regulator has a 'L' or 'LOAD' terminal that has a wire going out to feed the lights. None of these wires should have bare spots touching the frame. Let us know what you find. Jim
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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