Correct ballast resistor?

[mdwyer]

Putting in electronic ignition and wondering which ohms resistor is correct? Napa p/n anyone? Going on stock 71 383 charger.

thanks,
mike

[Chryco Psycho]

depends on the coil used , I like the lower resistance ballast for more spark output , high output coils are more likely to put up with this

[myk]

How come the MSD blaster asks for 2 ballast resistors?

[Chryco Psycho]

it shouldn`t ever need 2 ballasts , use one ballast matched to the coil

[myk]

Lol...I've had two resistors installed in my car for years.  I could have sworn that it was necessary.  I'll just yank one of 'em off...

[Ghoste]

I had the lower resistance ballast on mine and yanked it off.  The car seemed to start burning up ecu's as soon as I did this, so I changed it out and so far so good but ask me again in August.