Re: purple resistance wire heating up at coil
The resistor wire is in place of a ballast resistor. I may be mistaken... as I still run points, but from what I've read on other threads, the resistance wire is no longer used when you install the pertronix kit. You run a new standard purple wire off the choke's purple (or any 12-volt switched ignition wire) and tape off the resistance wire.
Remove all wires off the (-) terminal on the coil EXCEPT the wire that runs to the distributor. Remove the Grey wire (tachometer sender) and the wire running to the shift interruptor. and try it. This is also of coarse with full 12-volts to the (+) terminal on the coil and not using the resistance wire.
The tach and shift interruptor can both kill your spark if something isn't right with them so remove them temporarily to see if you have spark.