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ballast resistor


 
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292 Ralph
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Joined: 24 Dec 2007
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PostPosted: Wed Dec 26, 2012 3:09 pm    Post subject: ballast resistor Reply to specific post Reply with quote

I need a parts number or replacement for the ballast resistor for six volts on a 9N tractor .Thanks Ralph
 
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Den N Ms
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PostPosted: Wed Dec 26, 2012 3:27 pm    Post subject: Re: ballast resistor Reply to specific post Reply with quote

JMOR Answered that Question in the next post down.the stock (12250) resistor.
 
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Den N Ms
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PostPosted: Wed Dec 26, 2012 3:33 pm    Post subject: Re: ballast resistor Reply to specific post Reply with quote

For Models 9N, 2N. Resistor measures .5 ohms.

(Part No: A8NN12250B)
$17.50
[/img]http://www.ytmag.com/store/parts/pics/A8NN12250B_sml.jpg
 


Last edited by Den N Ms on Wed Dec 26, 2012 3:41 pm; edited 2 times in total
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HCooke
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Location: Missouri

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PostPosted: Wed Dec 26, 2012 4:41 pm    Post subject: Re: ballast resistor Reply to specific post Reply with quote

Available right here at Yesterdays Tractors

 
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jackinok
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PostPosted: Thu Dec 27, 2012 11:48 am    Post subject: Re: ballast resistor Reply to specific post Reply with quote

when you measure a ballast resistor, be aware that the resistance changes as it heats up. it may read .5 ohms cold but that reading will be higher when it is hot. a regular resistor does not change, or changes very little. the reason for using this type resistor on a ignition is to give you a hotter spark when cranking.as it heats up the extra resistance helps save the coil. if your going to replace a true ballast resistor with a normal resistor , measure its resistance when hot for longest coil life.this throws a lot of folks off, for some reason.
 
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