68 Valiant dies and runs lumpy, then suddenly runs fine.

Alrighty. I'll try to get to the alternator gauge bypass asap. I haven't seen any sparks since I replaced the voltage regulator, but I certainly don't want to be driving a future cinder. I drove the car last night, and when I give it any throttle, the headlights dim and brighten significantly as the gauge flicks back and forth. When coasting in gear it stops, when I hit the brakes, it stops. I also noticed that at on a light throttle there is a slight lag as the gauge drops below the middle line.

Thank you, everyone, for your help. :prayer::prayer::prayer::prayer: