1974 Dart 318 crank, but no start (Solved)

Full batt volt on both sides of coil, but if I hit the wire at ecu connecter that is connected to negative side of coil, it only registers like .56 volts, but coil side is over 12 volts.
This bit of information here is what gave it away. Good for you to post all the information you had. Glad you have it running.