Ballast resistor question

The diagram can be found at :
http://www.mymopar.com/downloads/Ignition_System_5pin.jpg


I dont have the wiring diagram in front of me to examine the whole circuit and explain its flow. I recommend wiring it the way it was when it worked and leave it at that. I have never fully understood why the conversion kit uses the duel ballast resistor when the factory didnt. I worked electronics with the Navy for 23 years and I'm pretty damn good at it but.....some times this early car wiring just doesnt make a whole lot of "Common Sense" to me. Any way I recommend using the jumper, I think its the link between the start and run circuits.
Joe