Balast resistor or no?

There are two wires that run from the ignition switch to the ballast. One is the 12V run wire that's hot when the switch is on. The other is the "start" wire that's only hot in the start position. Go over to mymopar.com and download a factory service manual for your car....."WHATEVER" it is as you've not said yet. They don't have them available for everything so if they don't have one for your make and model, got one that's close. You'll need to see which two wires are the run (Ignition 1) and start (Ignition 2) and wire those two together. Then from there, you wire in the wire feeding the positive side of the coil.