Holley's RetroBright LED Headlights modernize classic sealed beams with plug-and-play compatibility, enhanced visibility, and six times the lifespan. LEDs reduce space, heat, and power usage, fitting most shallow headlight buckets without modifications. Collaborating with Morimoto, Holley offers a classic look with advanced technology. The headlights feature a PWM LED driver for consistent brightness, with the 7" Round model producing 32,000 Candela on low beam and 53,000 Candela on high beam—nearly three times the light of original headlights.RetroBright headlights fit popular sizes: 5.75" round, 7" round, 4"x6" rectangular, and 5"x7" rectangular, available in 3000K for a classic appearance or 5700K for a modern look. Yellow lens options are available for a European style. They replace Sealed Beam Trade Numbers: H5054, H6052, H6054. Sold individually, order 2 for dual or 4 for quad setups. Note: Compatibility may vary, some vehicles like early 90s Toyota models may need a separate harness for wiring conversions, such as the H840 switched ground harness.