73 Duster Electrical Issue

I have a 73 Duster that I bought as a started project. It was originally a 6 cylinder car that was changed over to a built 318. Have done body and interior but now I am trying to start it. It will not turn over at all. I have headlights, turn signals , horn, even door buzzer. I have checked and have power to the bulkhead connectors. I have power to to the ballast resistor. I have a brand new HEI distributor with a super coil that I am using. I have tried unplugging the ECU and jumpering the ballast resistor and fried one of the plugs for the ballast Have fixed it and started over but still have nothing. When hooked up and key turned to run I have power to the resistor but it is getting very hot. I have hooked a starter switch up directly to to the solenoid and battery ad the motor will turn over. I am lost as to what to do now. I can't figure this out. I am a backyard mechanic so i am limited in knowledge. Any help!!!

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