Driving Light Wiring Harness

Wire Auxiliary Lights Off the Battery

Auxiliary lights draw more current than a dash switch and its wiring were ever meant to carry. A harness solves that by bringing power from the battery through wiring sized for the load. Everything on this page is from ARC Lighting, in a two-output version and in harnesses built for multi-light setups.

Find Parts for Your Vehicle

Select a vehicle or use the filters to find parts.

Match the harness to what you are actually wiring. Running more lights off a harness than it was built for, or splitting one output between several lights, is how wiring gets warm and how a good set of lights becomes a problem.

These are ARC Lighting's own harnesses, so the simplest path is to pair one with the lights it was designed around. Check what each listing includes before ordering, because connectors and fusing differ between harnesses, and the missing piece is always the one that stops the job on a Saturday afternoon.

Wiring an auxiliary light is not difficult, but it is easy to do badly. Route wires away from heat and moving parts, protect anything passing through sheet metal, and fuse close to the battery. Professional installation is available at our stores if you would rather not spend the day at it.

Common Questions

Do I really need a harness?

If you are adding lights that draw meaningful current, yes. Wiring them straight through a dash switch puts the whole load on wire and contacts that were never sized for it, and that is a heat problem long before it is a performance problem. A harness carries the current on its own wiring and leaves the switch as a signal.

How do I pick the right one?

By the number of lights you are feeding. One listing here is a two-output harness and the others are built for multi-light setups. Read what each one includes, and pair it with the lights it was designed around, since mixing connectors between systems creates more work than it saves.

Can H&H install it?

Yes, professional installation is available at every H&H Truck & Outdoor store. Auxiliary lighting is a job where routing and fusing matter more than the parts do, and a shop that does it regularly will run wiring where heat, hood edges and moving suspension will not find it.