I think you can find an instruction sheet for the Ignitor I on the web. The factory Mopar ECU used a 0.5 ohm ballast for the coil. I don't know about dual points. You cannot accurately measure yours with an ohmeter, so go by spec sheets. Coils probably varied, since I have a Mopar coil labelled "for use with electronic ignition only". I assume the ballast is still needed with that coil, but not sure.