A few years back I installed a Pertronix electronic ignition in my 66 Lemans with a Jacobs 50000 volt (I believe) coil. I really didn't have any trouble keeping it running before I did the swap from points, but now it will idle then just die. I had it running the other day and turned the headlights on and it died. It doesn't stumble then die, it just cuts out. Since I didn't do anything to the fuel system, I'm thinking it's electrical. It will start back up and run fine, I even turned the headlights on and let it run. I've reset the timing on multiple occasions and it doesn't seem to do any good. Could it be something as simple as the battery not providing enough amperage? I have a new voltage regulator and the alternator is good. What other things can I check?