actual need for ballast resistor with electronic ignition?

I converted this car to electronic ignition with a Direct Connection kit around 1983 and it has always had a 2 connection ballast resistor that Mopar supplied with the kit. I presume that the FBO ECU is designed for 12 volts as is the 6AL box in the MSD system.

Still hoping for confirmation that the brown wire is the 12 volt part of the system for starting and the blue wires are the run system. see description above...