A verification of what everybody knows already...
If you die on the road and swap another Mopar box THEY MUST BE GROUNDED
Another route you can go, and a couple guys here have gutted Mopar modules to hide them inside, is a GM HEI module. Same connections, electrically, as a 4 pin Mopar. No ballast needed AND IF YOU LEAVE THE KEY ON the GM modules do not draw coil current
Make sure distributor pickup is hooked as shown/ polarity
My junk/ test/ emergency ignition........GM 4 pin inside
...................."Engine stand testing" a magnum with a homemade carb adapter and the famous emergency box...........
LMFAO Anybody figure out what this is?