Need Help with a Crank but No Fire issue

Dana67Dart said
Sounds like ignition 2 is not powering the coil while cranking.

Easy test.. run a jumper from battery positive to coil positive and see if it fires while cranking.

kicked right off. Should I chase down a connection issue starting from the ignition switch?

The part that has me stumped though, is that any 5 pin ECU will work which is leading me to think that the ignition switch isn't the culprit.