Pertronix makes several products for Mopars. The OP is installing a Pertronix Ignitor (pickup and coil driver) inside an OEM 1966 points distributor. Their original Ignitor (OP's?) still requires a ballast resistor. Sometimes such ballast is built into a new coil (apparently OP's), otherwise you need to keep the OEM ballast. The Ignitor II has "dwell control" so doesn't need (nor should have) a ballast (or ballasted-coil). Best with an aftermarket e-core coil. You can get a similar result using a GM HEI module and e-core coil (many posts) but that requires a later Mopar e-distributor to trigger and loses "factory look". The Ignitor III module is best since adds multi-spark and rev-limiter.
