Since the original question was concerning an electronic ignition ballast resistor, the above diagram for a points resistor isn't correct. You need to post the diagram for an electronic 4 post resistor.
Where did the question of a voltage regulator come from? Different part for a different purpose.
Forget about the voltage regulator...
Different part, part of the charging system of the alternator and battery.
Note that certain Mopars depending upon the year had an electronic ignition system using a (2) terminal ballast resistor, while others used a (4) terminal ballast resistor...
Note the (4) terminal ballast resistor was used in the early days to protect the power transistor in the ignition module, later on higher voltage capable transistors were used in the ignition module so the second resistor part of the (4) terminal ballast resistor was not required. As requested here is a basic schematic of an electronic ignition system using a (4) terminal resistor. If U have any more technical questions just PM me, no need to take up additional bandwidth.
Just my $0.02...
