The Stovebolt Site Forums The Shop Area The Electrical Bay 6v ignition system - no spark from coil

I'm not an expert on this era of truck. I was surprised to see a ballast resistor in 51. They can be added to almost any truck
with points if a person wants. As you said, Chevy wiring diagram does not show a ballast res.

Let's see what your test wire does.

If someone uses a 12V battery on a 6V system, they could blow your light bulbs and other components.

It would be good to change to negative ground and 12V. Both are easy and are in the tech section. Albeit keeping it unique and stock is nice also. I guess.