Spark Tester - shop made

[RWDguy]

I made this spark tester from a late 70s/ early 80s ford distributor cap which has male connectors. I attached a food can top to the coil terminal for ground after cutting the can top to get the 7/16" distance to the terminals. It works very well.

 

[Iowa Gator]

That is a great and simple idea, think I'll try it think it would work with any number cylinder cap.