Update with new coil installed (12v for use with external resistor).

This may be a purely academic exercise at this point, but if the consensus is that I should be getting 8-9 volts on the coil side of the ballast....I’m determined to figure out why I don’t. Spark seems to be adequate but I just want to learn something.

With points closed and old delco remy resistor installed:
@ ballast input - 11.9v
@ ballast output - 5.5v
@ coil negative - 0.18v

I think I will measure the resistance of both the old and new ballast resistors this evening.

Edit: After carefully re-reading one of HRL’s posts, perhaps I will take another crack at cleaning the points as a next step.

Last edited by JW51; 05/12/2021 2:02 PM.

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