Nilight 16AWG Light Bar Wiring Harness 2-Lead with 5-Pin Switch 12V — 12ft, 180W Relay & Fuse Protection

Nilight's 16AWG 2-leads wiring harness kit with a 5‑pin LED rocker switch delivers a safe, dual-output 12V connection for light bars up to 180W.

This compact harness bundles a powered relay, blade fuse protection, a lighted 5‑pin rocker switch and two output leads into a plug-and-play wiring solution for one or two LED light bars. Designed for 12V systems, the assembly includes 12 feet of cable and the connectors needed to run two fixtures while keeping wiring tidy, protected and easy to install.

How does the Nilight harness keep my lights protected?

The kit uses a powered relay to handle high current switching and a blade fuse to guard against over-current and short circuits. That separation means the switch only controls the relay coil, reducing wear on the switch and improving overall safety.

• Built-in power relay transfers heavy load away from the switch.
• Blade fuse protects the circuit; two spare fuses are included.
• Rated for up to 180W total load on 12V systems.

Can I run two light bars with this wiring harness?

Yes — the Nilight harness contains two independent light output connectors so you can power dual fixtures from a single switch and relay, as long as their combined wattage stays under 180W. The two leads simplify routing and mounting for multi‑light setups.

• Two output connectors for dual light fixtures.
• 12 feet of cable for flexible placement and routing.
• Suitable for combined loads up to 180W on 12V systems.

What installation steps should I expect and how easy is it?

Installation is straightforward for installers familiar with vehicle wiring: mount the switch, connect the harness to the battery and lights, and secure the relay and fuse. The included LED rocker switch has a simple SPST on/off design and built-in LEDs to make locating the switch in low light easier.

• Simple SPST 5‑pin rocker switch with built‑in LED indicators.
• Plug-and-play connectors reduce on-site splicing.
• Instruction sheet included for reference and correct wiring.

Will this work on different vehicles and voltages?

The harness is intended for 12V battery systems common to cars, trucks, ATVs and boats; it supports most 12V-equipped vehicles without additional components. For 24V systems you must replace the included 12V relay with a matching 24V relay — otherwise do not use the kit on higher-voltage setups.

• Compatible with most 12V vehicles: jeeps, ATVs, UTVs, cars, motorcycles, boats and trailers.
• For 24V systems, swap to a 24V relay before installation.
• Not recommended for permanent use on higher-voltage systems without modification.

Who is this for? The Nilight 16AWG 2‑leads harness is built for DIY installers, off‑road enthusiasts and professional fitters who need a compact, protected wiring solution to operate one or two LED light bars from a single switch. It’s ideal when you want an organized install with relay protection and an illuminated switch for low‑light operation — provided your combined light load stays within the 180W limit and the vehicle uses a 12V electrical system.