I wondered about the ballast resistor/coil wiring because during cranking, a different wire supplies power to the coil than during normal running. That different wire for cranking is connected to the coil side of the resistor, so it bypasses the resistor to provide a full 12V to the coil for a hotter spark to assist in initial startup. For normal running, power is supplied to the other end of the ballast resistor, which drops the effective voltage to the coil to prevent burning out ignition components prematurely.

With the key in the Run position, are you getting any voltage to the terminals on the ballast resistor? You should see ~12V at the end of the resistor opposite the coil, and something less than 12V at the other end of the resistor that's wired to the coil. If you got nada, then something isn't allowing power to the coil during normal running. Maybe a bad ignition switch (the electrical part, not just the key lock cylinder), or a failed fusible link, or faulty wiring, or maybe something else.