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Farmall & IHC Tractors Discussion Forum
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Bob M please help

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Buster

11-17-2003 16:30:56




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Farmall 100, confused by what some call a three wire 10SI and a single wire. If I use the single wire will I need the diode,jumper wire etc. What wire goes to the ignition switch? Could you please walk me through the wiring diagram or just ell me differances in some of your diagrams. Seems the more I learn the more I become confused.
Anything will help, thanks in advance.




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Bob M

11-17-2003 18:09:05




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 Re: Bob M please help in reply to Buster, 11-17-2003 16:30:56  
Buster - As the name implies there's only a single wire required for a 1-wire alternator: It runs from the alternator to the ammeter. No extra diode's, lamps, jumpers, etc are required.

HOWEVER there is a cost for this simplicity: 1 - First cost of the alternator is higher (about double a 3-wire unit). 2 - Single wire alternators must be spun up to a much higher RPM at startup before they begin to generate current. Can be a problem sometimes on low RPM tractor engines.

Punch below for a wiring diagram for a single wire unit that may help clarify...

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Buster

11-18-2003 07:34:20




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 Re: Re: Bob M please help in reply to Bob M, 11-17-2003 18:09:05  
It now makes sense. Will your diagram for the three wire alternator on the M work on a Farmall 100? Also what do I ask for at the parts store on the three wire alternator? Can I use a 12 volt coil with an internal resister? Does this require a special wire to the coil? Thanks, you're saving my life here.



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