73 valiant no spark from coil

Dude, I am lost reading the last 8 posts. Are we still talking about a 73 Valiant? Try this: remove plug the rotor is pointing at and set on valve cover with cable still attached. turn on ignition, Take a wire attached to negative coil terminal and drag it across the grounded clean metal surface, like the frame rail. does the spark plug fire a bunch of times, like a tazer? Coil check and ECU/ballast power to coil check. PAst that there is a way to do this off the ECU terminal too. Its the pin at 7:00 if you view the ECU with the transistor UP, opposite the missing pin if your ECU has only 4 pins.