I'm currently running red LED tail&brake lights in my '73 Dart.
Also tried a number of front turnsignal LEDs but I couldn't get LEDs working together properly on all four corners at the same time. Even with a proper LED turnsignal flasher. So I'm currently just running LEDs at the taillghts.
Just today however I installed a pair of LED headlights, which seemed to be an easy swap-in and consume less power then the regular lightbulbs.
Haven't driven at night yet to see the difference.
