You can run either a resistor coil or a ballast resistor but NOT BOTH. The advantage of a ballast resistor is, if wired correctly will deliver a full 12v to the coil when starting and reduced to approximately 9v when running. This reduced voltage protects the coil and points from burning up prematurely. The increased voltage when starting helps when starting, especially in the cold.

The ballast resister also needs to be matched to the coil to work properly.

I’m not an expert “Sparky”, so I will leave the testing to one of our expert electrical “Bolters”.

Good luck!

Last edited by Phak1; 09/26/2019 1:38 PM.

Phil
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1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
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