I don't know if the coil was changed with the 12v conversion, but I suspect it was as it was identical to a coil in a 74 GMC truck we had. Still, I did not see a ballast resistor and there was 12v at the coil when the ignition was on, so I picked up one at Autozone and installed it in series with the 12v from the ignition. I filed more on the points and put everything back together, and it started and ran smoothly. I'll have to see if that lasts. I'll see if maybe I need to change the condensers, too. In hindsight, the plug wires got changed as part of the shotgun approach to trying to fix the problem last Spring, and now I wonder if they were resistor wires before. Still, until I changed points it continued to miss then, but it had run well for the previous 20 years.
Thanks for all the helpful comments. Sometimes it is a bit of a mystery working on these 60+ year old machines, especially when they have modifications.
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Today's Featured Article - Chores - by Frank Young. The ceaseless passing of time! It is at once our friend and our enemy. It measures our progress and it makes us old. Like most features of our life, few things are all good or all bad, and most such judgments depend on our own perspective or viewpoint. In our particular hobby, we enjoy the nostalgic return to the days of our youth as we recreate many of the scenes that took place on the family farm that served as the stage for the first few acts of the play that is our live
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