Nilight 10012W LED Light Bar Wiring Harness Kit — 12V 5‑Pin Rear Lights, Waterproof Rocker Switch & Relay, 12 ft Lead

Nilight’s 10012W wiring harness kit provides a complete, plug-and-play 12V power and control solution for dual LED light bars, adding a waterproof 5‑pin rocker switch, relay, fuse and illuminated LED indicators for easy use at night.

This kit is built to power two light fixtures up to 180W total and simplifies installation by grouping the power relay, inline blade fuse, and two output leads into a single harness. It’s designed for vehicles with 12V systems — from Jeeps and ATVs to boats and trailers — and the switch features small built‑in LEDs so you can locate the control in low light. The harness balances safety and convenience with an extendable 12‑foot main lead and protective components to reduce the risk of electrical faults.

How does this harness make installing dual light bars easier?

The harness eliminates the need to wire each light independently by offering two output connectors and a long main power lead, so you can route wiring neatly and connect two lights without extra relays or switches. The 5‑pin rocker switch consolidates control while the inline fuse protects the circuit during installation and operation.

• 12 ft extendable main lead for flexible routing
• Two light output connectors for up to 180W combined
• Prewired relay and inline blade fuse reduce additional parts
• Clear connector interfaces speed up attachment and reduce errors

What safety features are included to protect my vehicle’s electrical system?

The kit integrates a power relay and an inline blade fuse that act as primary defense against overcurrent and short circuits. These components help prevent damage to wiring and accessories by interrupting excessive current flow before it reaches sensitive circuits.

• Power relay handles high current without passing it through the switch
• Inline blade fuse provides replaceable overcurrent protection
• Waterproof switch and sealed connectors minimize moisture intrusion
• Durable insulation on leads reduces abrasion risk during routing

Will the illuminated rocker switch improve nighttime operation?

Yes. The switch uses two small built‑in LEDs to emit a soft glow, making the control easy to find in the dark without distracting glare. This is especially helpful for off‑road or marine use when quick access to lighting controls matters.

• Soft LED illumination highlights the switch at night
• 5‑pin layout supports simple wiring and reliable switching
• Waterproof rocker design resists moisture and dust ingress
• Compact form fits common dash mounting openings

Which vehicles and light types are compatible with this Nilight kit?

The harness is engineered for 12V electrical systems and works with most aftermarket LED light bars and auxiliary lighting rated within the kit’s power limits. It suits a wide range of vehicles including off‑road rigs, motorcycles, boats and trailers where a centralized, protected control is required.

• Compatible with Jeeps, ATVs, UTVs, cars, SUVs and trucks
• Works on motorcycles, boats, yachts and utility trailers
• Designed for dual LED fixtures under 180W combined
• Includes instructions to help with typical vehicle installations

Who is this for? The Nilight 10012W wiring harness kit is aimed at vehicle owners and installers who want a tidy, safer way to add and control two LED light bars without fabricating custom wiring. It fits DIY mechanics, off‑road enthusiasts, fleet operators, and marine users who need a durable, illuminated switch, reliable relay protection, and straightforward 12‑foot wiring for flexible placement and tidy routing.