I don't think anyone claimed to know more about your tractor then you. I don't even know what it is specifically. Some of us do know of Georg Ohm's Law - one of the most fundamental laws used in electronics for almost 200 years. Also about the Kettering coil and points battery ignition system.
You didn't give any specs on your tractor or what type of resistor you were using. As I stated earlier, I never heard of any 12 volt breaker-point system using a 2 ohm or a 2.2 ohm rated resistor.
The measurements on a cold resistor with no current flowing through it are pretty much useless.
I realize you were not asking for advice - but you must expect a few opinions when posting this stuff on a public old-tractor forum.
A typical resistor used in a 12 volt system will only have 1/2 ohm when cold with no current and up to 2.5 ohms @ 3 amps at 14 volts when hot and a lot of current demand.
What you stated in your original most does not make sense according to commonly used auto ignition basics and Ohm's Law.
So yeah, I don't know any specifics on whatever tractor you have and what ignition system it presently has in it. I DO know the principles of a conventional 12 volt breaker-point system.
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