Nilight 10012W 12V LED Light Bar Wiring Harness Kit — 5‑Pin Illuminated Rocker Switch, Dual Output (Black, 12ft)

Nilight's 10012W Wiring Harness Kit is a ready-to-install 12V harness with a 5-pin illuminated rocker switch, relay, inline fuse and dual output leads to power two LED light fixtures up to 180W total.

This complete wiring kit bundles the electrical essentials for adding or replacing rear or auxiliary LED lighting on vehicles. Engineered for automotive and marine 12V systems, it keeps the switch wiring tidy, protects circuits with a blade fuse and relay, and includes a built-in LED indicator so you can locate the control in low light. The kit’s 12-foot harness and two output connectors simplify routing to two separate light bars or dual fixtures.

How does this harness protect my vehicle’s electrical system?

The harness uses a dedicated power relay and an inline blade fuse to separate the switch circuit from the high-current feed, reducing stress on factory wiring and preventing heat buildup at the switch. If an overcurrent or short occurs, the blade fuse sacrifices itself to interrupt the circuit and protect the rest of the installation.

• Included power relay handles high current without running it through the switch.
• Inline blade fuse offers simple, replaceable overcurrent protection.
• Quality connectors reduce loose contact and arcing risk.

Can I run two light fixtures from this kit, and what’s the power limit?

Yes — the harness provides two sets of light output connectors designed for dual fixtures with a combined maximum load under 180 watts. That makes it suitable for most aftermarket LED light bars and auxiliary lamps used on Jeeps, trucks, ATVs and boats for non-continuous auxiliary lighting.

• Two output leads accommodate two separate light fixtures.
• Total supported wattage: up to 180W combined.
• 12-foot main harness gives flexibility in routing to both lights.

Is the switch usable in low light and suitable for outdoor use?

The included 5-pin rocker switch features two small internal LEDs that softly illuminate the rocker, so you can find the control at night without glare. The switch and wiring are built for outdoor vehicle use with waterproofing in key areas and ruggedized connectors intended for road and trail environments.

• Illuminated rocker switch for easy nighttime use.
• Water-resistant components at switch and connector interfaces.
• Heavy-duty wiring designed for automotive vibration and exposure.

How easy is installation and what’s included in the package?

The kit is designed for straightforward bolt-and-splice installation with clear connectors and an included instruction sheet. It reduces the need for custom wiring by supplying the relay, fuse, switch and two output leads in one bundle.

• Package: wiring harness kit, 5-pin LED rocker switch, instruction manual.
• Pre-terminated connectors allow quick attachment to light fixtures and battery feed.
• 12-foot harness length simplifies routing to rear or roof-mounted lights.

Who is this for? Installers, DIY enthusiasts and professional mechanics who want a reliable, protected wiring solution for adding or upgrading auxiliary 12V lighting will benefit from the Nilight 10012W harness. It's ideal for owners of Jeeps, trucks, ATVs, UTVs, motorcycles, trailers and boats who need a tidy, illuminated switch, overcurrent protection and the ability to power two LED fixtures without modifying factory circuits. The included 2-year warranty offers added assurance for seasonal and daily drivers alike.