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 - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
... [Read Article]
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