Universal H4 Headlight Relay Harness Kit 12v

Description

Universal H4 Headlight Relay Harness Kit – 12V

Directly power your H4 headlights from the battery with this universal 12V relay harness kit. Bypass aging factory wiring to eliminate voltage drop, solving problems like dim, flickering lights and overheating plugs. Featuring high-temperature ceramic sockets, durable relays, and an inline fuse, this plug-and-play kit delivers up to 30-50% brighter light while protecting your vehicle’s original electrical system. Ideal for halogen, HID, and LED upgrades.