Jeffrey,
Crazy we’re both working on 1938 Thor mags!

I am told the American Bosch coils rarely go bad but if they do, the military coils on ebay (which have been discussed on this forum) can be made to work.
My coil tested good on the primary circuit (winding) but I got nothing when testing the secondary circuit (winding). Initially, I had only a very weak spark on one cyl.
I have taken everything apart and am in the process of cleaning and adding new plug wires.
Can you post some pictures for us?

Scott

• This reply was modified 4 years, 6 months ago by opposedtwin.
• This reply was modified 4 years, 6 months ago by opposedtwin.
• This reply was modified 4 years, 6 months ago by opposedtwin.