Many late model vehicles require the use of an optional CAN Bus Decoder, so that the vehicle computer doesn't show an error message on the instrument panel. The LED bulbs use so much less power that many late model vehicles notice the difference in power consumption & may assume there is a headlight burned out.

Upgrade your vehicle's lighting with premium headlight bulbs, replacement cartridges, and wiring harnesses from Holley. Featuring RetroBright LED technology and plug-and-play solutions, these headlight components deliver improved visibility, reliable performance, and easy installation for classic, restoration, and performance vehicles.

Restore or upgrade your vehicle's marker and signal lighting with high-quality bulbs, sockets, and wiring harnesses from Holley. Designed for dependable illumination and easy installation, these replacement components help maintain safety, visibility, and factory-correct operation on classic and modern vehicles alike.

Complete your lighting installation or repair with premium automotive plugs, pigtails, sockets, and wiring harnesses from Holley. Built for reliable electrical connections and hassle-free installation, these components help restore factory functionality or support custom lighting upgrades on a wide range of vehicles.