ORIGINAL: w8ye
A series resistor is counter productive in this application as the amount of voltage drop is dependent on the load. You would have the greatest voltage drop as the capacitor was charging and when the current draw is at a minimum the voltage would soar. The total internal resistance would make for a poor performing ignition system.
Well it was just a question. How about a voltage droping arrangement of diodes?
I guess the use of a voltage regulator may not work either. Too bad.....he had several packs...all to high voltage. Well it is a good learning curve for others too!