I'm not 100% sure where this goes... Okay. Here's the info. 1972 Dodge Dart Swinger 318 (mild build) / 727 stock (~1000 miles) New Alternator, New voltage regulator, fairly new battery, new electronic ignition module. Start car, runs drives great. Turn on headlights at idle with low heater fan... dies. Anytime I put a heavy electrical load on it, it dies. I've idled it up some and this helped but with high beams, low-high fan, it dies. I've tried this with my fathers truck... high beams, high fan, brake lights, dome light... at idle.... doesn't even phase it. Any suggestions/tests I can do for more information?