318 Wont start unless I jump out the ballast resistor.

Sounds like the ignition switch or mabby a bad fire wall conection. Jiggle all the plugs on the fire wall to make sure they are in all the way. If not it could be the ignition switch. Or mabby the nutral safty switch?

I just had the same problem with my car. The igntion switch was to blame for me.

Good luck.