[chopper]

I concur with what the learned Mr Putnam says about the ballast resistor. My car, when purchased from the original owner, had the MSD 7AL ignition system hooked up through a Unilite distributor. After two failures of the distributor module in less than 6 months, at a replacement cost of $95 a pop, I yanked the Unilite and installed an MSD billet distributor. After reading several of these threads, I went back in and found that the original owner had wired around the ballast resistor and the Unilite was getting full voltage. MTBF was about 250 miles. I like the MSD distributor, but it would have been nice to save the $240 if I'd known all I had to do was move a couple of wires around.