The one failure I had 'in use' was NOT a 'for sure' unit. Not sure where it came from. It was on the fender for years doing nothing when I was running my MSD box. The second failure was DOA..some supposed NOS (NOT Mopar) piece.
'Proper' ballast. They do vary in actual measurement, but something along the line of an RU12. I've run an Accel 140001 for over 30 years. Ran it with my MSD-6C for years, too (w/ no ballast).
I'm not looking to solve a problem. I've had only one or two Chrysler modules go bad in 45 years.
I am curious how many of them fail in the same way...dist+ to ground short.