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Here it is installed. It’s not easy to see the top of the distributor but you can see the red rubber spark plug cable end that is plugged on to the brass 1/4 20 bolt. As you can see, I installed a ballast resistor in series with the “12” volt supply wire. The DC to DC converter I used has a 13.8...

I installed my coil replacement adaptor. I’m using an American made 12 volt coil. I power it with a DC to DC converter. Truck runs good even when it’s hot out and I’m going slow. That’s when I had most of my problems. So my heat issues were the coil. Moving it out of the distributor solved the...

Yes, I checked the vacuum and supply line. They are so small that they aren't effective for removing heat from the coil cavity. Someone told me they are there to remove ozone created by the arc of the points. I have built an adapter that will allow me to use a 12 volt external coil. I plan to...

I don't know if this has been covered before, but My M37 distributor gets hot when running the truck slow. Like in a parade for example. On a hot day the coil gets too hot and quits. When I open the hood and let it cool down, it starts and runs again. The coils I have in stock are the chrome...