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Ignition Resistor Connections

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1st Time Bob

07-30-2000 13:03:29




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I noticed the insulation on my ignition resistor to ignition coil wire is cracked. I was going to replace the wire. The wire from the ignition coil is connected directly to the same terminal as the wire leading to the on/off switch (bypassing the resistor). The key switch had been replaced with a standard on/off switch. Question: Why would the previous owner do this? To bypass a non-working resistor? Question: What does the resistor do? Question: What gauge replacement wire do I use?

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Fred OH

07-31-2000 08:31:06




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 Re: Ignition Resistor Connections in reply to 1st Time Bob, 07-30-2000 13:03:29  
Bob, I'll answer the first question. He didn't know about this board!----L8R----Fred



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Dell (WA)

07-30-2000 15:00:51




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 Re: Ignition Resistor Connections in reply to 1st Time Bob, 07-30-2000 13:03:29  
Bob..... ...I'm glad you searched the "archives" and found a little info about the frontmount "ballast resistor".

Realize that there are a lot of automobile ignition systems outthere where the ballast resistor is "bypassed" during starting for hotter sparkies and as soon as you let up on the key the ballast resistor is automatically switched back into the ignition circuit. Now with that information, someone could incorrectly deduce that the N-Tractor needs to bypass the ballast resistor for eazier starting. WRONG. For good starting on your 6 volt front mount N-Tractor, you need clean and tight battery connections with heavy 2 gauge battery wires. 12 volt battery cables just don't have enuff ampacity. And you need 14 gauge wire to the ignition coil. For about $12, you can get a ready made, correct length and color coded with terminals with fresh modern insulation to replace your dried out, cracked N-Tractor wiring harness. Something to think about.

New ballast resistor $3 - 5, its not worth your time trying to out guess the previous owner, get a new one. You need a ballast resistor to keep from burning out your $35 front mount ignition coil. A switch is a switch, key operated or not, your choice..... .Dell

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Den in Denver

07-30-2000 14:29:36




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 Re: Ignition Resistor Connections in reply to 1st Time Bob, 07-30-2000 13:03:29  
Most likely that someone before you put in a new coil that uses the full voltage. The resistor is there to drop the voltage to about 3.5 volts to the coil. If it was not in the circuit the coil would get really hot and shut down. ]



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1st Time Bob

07-30-2000 13:11:42




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 Re: Ignition Resistor Connections in reply to 1st Time Bob, 07-30-2000 13:03:29  
Just read what Zane said about the 9N Backfire (ignition system). It appears that my resistor might be bad which is why the previous owner bypassed it. Is there a way to meter or test it? Or must I just assume it's bad and get a new one?



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1st Time Bob

07-30-2000 14:28:03




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 Re: Re: Ignition Resistor Connections in reply to 1st Time Bob, 07-30-2000 13:11:42  
I have been reading the archives since I first posted. There were 1007 posts related to resistors. I read that the resistor drops the voltage from 6.3v to 3.5v. If it has a .5 ohm resistance it is still good. Next time I'll read first and ask questions later. Thanks.



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