[dmjlambert]

The alternative is you can cut your HEI power supply wire, and install a ballast resistor which you would mount on the firewall, change the terminal on the end to the ring terminal to fit on the coil, and run another wire with ring terminals on both ends to the coil and the R terminal on the starter. The ballast resistor or resistor wire reduce the voltage at the coil to preserve the coil and your points. The additional wire going to the R terminal on the starter is to bypass the resistor and provide full voltage to the coil only during start, to give a bigger spark during start.