needed:: wiring diagram for HEI IGNITION

Actually, TB, if I'm not mistaken, the tach wire and signal wire (to the module) are in effect the same terminal, no? IN other words, electrically, the coil only has 2 primary terminals, + the coil hi v. wire.

Yes, that should be correct.
One 12+ (ign), one ground (one of the wires on the module), two wires for the pickup signal and a tach lead.
But which is which is the question, and I can't find a diagram anywhere for some reason.
Only a description that I posted.