Upgrading the headlights of a classic vehicle, like this 1st Gen Ford Bronco, to Holley RetroBright LEDs is a smart move all the way around. Not only do you get the strong, clear light of an LED headlight, but Holley RetroBright headlights are designed to fit classic bulb sizes. And since LED headlights use less power to run, your classic vehicle’s wiring isn’t as taxed.