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voltage regulator

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ogri211:
That explains it good it works with an exciter which is an electro-magnet on the alternator, when the battery is low it lets the full voltage through and the electro-magnet gives maximum current, when it reaches a higher voltage the battery voltage goes through a resister in the voltage regulator reducing the voltage at the magnet and hence the current output, and when the voltage is excessive it goes to ground giving no voltage at the magnet and hence no output from the alternator, someone on mine obviously connected the 12v in and the exciter wire to give maximum current all the time which would have eventually cooked the battery. 

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