FiTech EFI system

Rustedwrench said

Ignition ON power from the ignition switch is typically hot during Ignition Run and Ignition Crank positions. Only Ignition Accessory is interrupted in the Crank position. ECUs of all types require a constant voltage input for keep alive memory and a Ignition On input during operation.

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NO NOT correct. This is a well known issue on Mopars. The "run" line (IGN 1) typically dark blue / white, goes DEAD during crank

The ONLY ignition source that is hot during cranking is the ignition bypass (IGN-2) typically brown.

This is typically an issue, and I mean a "typical issue" when guys install alternative ignitions, such as HEI, MSD, or others You must jumper those two together in such a way that voltage is present during start.