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I am converting farmall h tractoer electrial system from 6 volt to 12 volt. Need a diagram of wiring using an alternator

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If the kit contains a wire and a diode, one would ASSUME it is a standard "3-wire" alternator, rather than a less-desirable (goofy) "one-wire" unit.

Here's a simplified diagram.

i am converting farmall h tractoer electrial - alternatorharness31.jpg

Please note the diode, an "idiot light" or a 10 Ohm 10 Watt diode can be used interchangeably in the "excite" wire lead.

Posted on Jul 08, 2010

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I have a old tow motor w/ a wisconsin air cooled engine . I'm looking to change the 6 volt system to 12 volt system. looking for a basic 12 volt wiring diagram for GM alt. and wisconsin parts?


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Diagram to change a 6 volt 1940 farmall to 12 volt


Use this link:

http://www.antiquefarmalltractors.org/forums/index.php

Then Register (upper right corner of page) after that post your question there. These guys are serious Farmall Tractor people they will be more than happy to help you.

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Changing from Pos ground generating system to Neg ground 1 wire alternator system. need wiring diagram. At present the minute the key is turned the engine starts tuning over. wiring had been...


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