In Reply to: 1943 Ford 9N posted by Don Kearfott on July 13, 2022 at 11:05:02:
Not supposed to get red hot. Might be the wire from the resistor to distributor is shorted, or the head of the screw that makes the terminal where that wire connects to the resistor is touching the dash, or something conductive has gotten between the screw head and the dash. You can disconnect that wire from the resistor and turn on the ignition. If the resistor gets hot, it is the screw shorted. If not the wire.
In a factory system, if the ignition is left on, engine not running, points closed, the resistor will get hot. It may even smoke if there is any oily dust on it. It will not get red hot.