I found an article that says we don't really need a ballast resistor if we don't have points (I don't).
Electronic ignition systems, whether factory Mopar or aftermarket, don’t utilize breaker points, thereby not actually needing a ballast resistor to control amperage through the pickup coil. And while ignition coil life may be compromised without a resistor, the additional secondary voltage (at the spark plug) is increased which generally improves power. So does your application require a ballast resistor? Quite simply, if your distributor has breaker points the answer is yes; if not, the answer is no.
For full article go
here.
