hot coil wire

thats my problem i cant find my 12 v wire and only have the 2 wires that came with new ignitor and was wondering if i could just use the hot wire off ballast resistor to be my third wire going to coil as 12 v from ignition, and maybe hook neutral from ballast resistor to coil or not use nuetral from ballast resistor at all, you see in my engine swap something happened to my 12 v wire from ignition, and i know that one side of ballast resistor is hot from ignition. there is no third wire coming out of ballast resistor, and i need a hot wire from somewhere to my coil? please help thank you