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Farmall & IHC Tractors Discussion Board |
Re: 12 volt alternator wiring
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Posted by Doug in OR on August 10, 2002 at 19:10:55 from (12.225.49.173):
In Reply to: 12 volt alternator wiring posted by Hal Davis on August 10, 2002 at 17:52:22:
You can buy a single wire 10SI. Installation is a bit more simple. That's on the plus side. The two negatives are: 1) A single wire alternator will cost more $$$. 2) A single wire alternator generally needs more RPM to start charging than a conventional 10SI alternator. On a tractor, extra RPM is harder to develop. To wire a regular 10SI, you can put the light in if you choose. If you don't want the light there, you can substitute a diode (usually a 1N4001 or such) and a 47 ohm, 2 watt resistor. Tie the resistor and diode in series. Have the "band" side of the diode facing the alternator #1 connection. The beauty of a conventional 10SI is that they can be had at many junkyards for about $10. Maybe even as much as $39, rebuilt, at an auto parts store. You'll pay maybe $79 or more for a good single wire alternator.
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