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Old 09-18-2010, 03:10 AM   #2
MikeK
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Join Date: May 2010
Location: Windy City
Posts: 2,919
Default Re: Polarize Generator

With the generator in the car and wired (but not running), take a short jumper wire and touch it across the in and out terminals of the cutout for 1/2 second two or three times. Expect a small spark. If the generator is out of the car, connect the genny frame to the battery terminal that is ground (+ on 6V, - if you are 12V). Touch a jumper from the other battery terminal to the genny output that goes to the cutout. You do not need the cutout in place to do this. If you are switching a genny that has been used on one polarity to the other (changing from + ground to -), you may have to zap it for a second a half-dozen times or so. What you are doing is using the field coil to magnetize the iron coil cores and frame, and if they have previously been set in the wrong direction you will be de-magnetizing them and remagnetizing in the new direction.
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