Ballast resistor

Posted by RickB on August 29, 2004 at 16:51:29 from (65.219.213.245):

In Reply to: What's up with these 8N coils????!!!! posted by Gary Clark on August 29, 2004 at 13:58:48:

N series tractors with a stock, 6 volt front mount distributor ignition system have a ballast resistor that drops the voltage to the coil from a nominal 6 volts to around 4. Sounds as if your new gem may not have such a resistor. A steady diet of 6 volts input to a stock front mount coil will roast it. Repeatedly. If you must jump your N with 12 volts, learn how to jump the starter motor only and use the tractor's 6 volt system to supply ignition voltage.

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