GM Ign Module Wwiring

Is the signal a 5v pull up/down or a 12v ? It may be able to be triggered from a pick up only. You'd have to test it, rig it up and spin the distributor to trigger a coil to ground spark gap. Iirc the trigger from an MP distributor must be conditioned, ie amplified for anything to use it. Even an ECU can be used as an amplifier but that would be defeating the purpose.