Hate to start another thread ... but.. help !

RPM said

I will change the ballast out, but I dont have a lot of hope thats my issue.

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The ballast does regulate voltage to the coil in the run position, and yes you should have 7-9 volts at the coil when running.

The MSD coil does require a lower OHM ballast.

Have you checked the wire from the ballast to the coil? Could be broken somewhere, just a thought. Or the wire feeding the ballast?