Ignition Issues - ‘74 Dart Sport

Oh MAN!!!. I've posted this before---and of course you may not know you HAD a short, but when you suspect a short or know you do, put a big wattage 12V lamp like backup, turn lamp in series with the battery

First thing "I'd check" is the alternator output stud connection. Is the wire shorted, is the alternator shorted, etc?