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what is the purpose of the ballast resistor? can they be jumped?
Save the coil from max voltage on normal drive, graduating the voltage level as far the enviroment is getting hot at engine bay. With hotter enviroment, gas needs less spark power to ignition.
On Start up moment, resistor is bypassed from ign switch, feeding directly the coil at brown wire spliced at resistor, to max voltage, being engine/gas is theorically cold and harder to burn out.
ballast has NOTHING TO DO with distributors &/or modules, JUST with coils.
Double ballast have the secondary voltage to ECU, I guess to JUST graduate the dwell or something like that on spark control system, but I don't think to really FEED it. There is ppl who has been able to run 5 pins modules with single ballast, what does not mean was working good or perfect. 4 pins modules have the secondary resistor built in.
On multi spark systems, the multi sparks setup makes not to get full power constantly during teh spark moment, so every milisecond between sparks gets the time to get cold at least enough to not burn out the coil. At the ends works like a time dimmer, or a voltage relay regulator ( mechanical regulator ) but NOTE: not with the same object, That it was to give you an idea.
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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