Holley's RetroBright LED Headlights upgrade classic sealed beams with modern LED efficiency, offering plug-and-play compatibility, enhanced visibility, and a lifespan 6 times longer than halogen lights. They feature a low-profile design to fit most shallow headlight buckets without modification. Collaborating with Morimoto, Holley has developed these headlights with a PWM LED driver to maintain peak intensity. The 7" Round model delivers 32,000 Candela for low beam and 53,000 Candela for high beam, significantly brighter than original headlights.RetroBright lights are available in 5.75" round, 7" round, 4"x6" rectangular, and 5"x7" rectangular sizes, with color temperatures of 3000K for a classic look or 5700K for a modern appearance. European-style yellow lenses are also offered. These headlights replace Sealed Beam Trade Numbers: H5054, H6052, H6054, and are sold individually—order 2 for dual headlight setups or 4 for quad setups. Note: Certain models, like early 90s Toyota vehicles, may need a harness modification. Older Toyota models may require the H840 switched ground harness.