[AT] question on use of resistor on coil

[charlie hill]

Cecil,  I haven't been following this thread closely but some of the Delco 
Remy coils are internally resisted.  They don't need a ballast resistor, 
take 12 volts from the battery but send 6 volts on the small wire to the 
points.

Charlie
----- Original Message ----- 
From: "Cecil E Monson" <cmonson at hvc.rr.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Saturday, October 23, 2004 5:05 PM
Subject: Re: [AT] question on use of resistor on coil


> What gets me about this business, Charlie and Dean, is that
> the coil I just tried is listed as a direct replacement for not only
> AM791T but also for Delco Remy 1115379. I am just smart enough to know
> that something is fishy with this as this coil, #AM373T, is also listed
> in the Parts Catalog for my JD 2010 as the correct coil and we all know
> the 2010 was never anything but a 12 volt system.
>
> When you go to a JD dealer today and ask for a new coil for the
> 40 or the 420 or the 2010, this is what you are going to get and whether
> you have a 6 volt system or a 12 volt system doesn't matter to the parts
> man.
>
> Getting back to my original question, are we supposed to use a
> resistor with the coil in a 12 volt system or when used in a 6 volt
> system?  I think the 12 volt system needs the resistor, not the 6 volt
> but the instructions say boldly on the box "must be used with a resistor"
> which is what puzzles me.
>
> FWIW, Dean, I have full sets of manuals for all of my JD tractors
> - all three of them. grins. I bought the manuals shortly after I bought
> each tractor so they would be as current with the model as possible.
>
> Cecil
> -- 
> The nicest thing about telling the truth is you never have to wonder
> what you said.
>
> Cecil E Monson
> Lucille Hand-Monson
> Mountainville, New York   Just a little east of the North Pole
>
> Allis Chalmers tractors and equipment
>
> Free advice
>
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