The coil requires an external resistor. I traced the wire into the firewall, where I assume it goes to the ignition. So it goes from ignition > ballast resistor > coil > distributor. Attached are some pictures.
Attachments
IMG_0142.JPG (134.26 KB, 262 downloads)
IMG_0141.JPG (250.63 KB, 267 downloads)
IMG_0143.JPG (274.03 KB, 256 downloads)