Light Wiring & Harnesses
Wiring for off-road lighting, including wire harnesses, relay and rocker switch kits, splitters, extension cables, relay holders and wire hiders. Most items are from KC HiLiTES, ORACLE Lighting and Baja Designs. Match the harness to your light model and connector type, and check the maximum wattage listed so the harness suits the number of lights you are running.
Guides for this category
Light Wiring & Harnesses FAQs
Do I need a wiring harness for off-road lights?
Yes for anything beyond the smallest lights — a relay harness lets the light draw current directly from the battery through a fuse, instead of overloading a switch or factory circuit. It protects your wiring, prevents voltage drop that dims output, and makes the install cleaner. Most auxiliary light bars and pods should run a dedicated harness with an inline fuse and relay.
What is in a plug-and-play light harness?
A plug-and-play harness typically includes the wiring, a relay, an inline fuse, a switch, and weatherproof connectors sized to the light. It is pre-terminated so you connect the battery, mount the switch, and plug in the light with minimal cutting. Match the harness to your light's connector and current draw; a single pod needs less than a high-draw light bar.
How do I keep light wiring from failing off-road?
Use sealed, waterproof connectors and route wiring away from heat, moving parts, and pinch points. Water intrusion and chafing are the top causes of off-road wiring failure, so add loom where the harness crosses metal edges and secure it so it cannot rub. A fused relay harness also protects the circuit if a wire shorts, which is common when lights take a hit.
