GM Ign Module Wwiring

Check the megasquirt site since I recall photos and description of that "GM module integral w/ coil". It is not the "small cap" HEI module, which is the preferable one and many here use (1985-95 GM V-8 trucks). Preferable because a GM cable connects it to their "external coil", and uses sealed Weatherpack connectors. For earlier GM HEI modules, ground is via the mounting screw, but your 1996+ one uses a wire, as 67Dart273 shows in post 6. Also, you can't trigger it directly from a Mopar distributor (or even a GM distributor), since it needs a processor in-between.