Nilight 10016W DT wiring harness kit for LED light bars — 12V 12ft cable, on/off switch & relay, 2 output leads

The Nilight 10016W DT wiring harness kit gives you a ready-made 12V power and control solution for LED light bars, with a dash switch, relay protection, inline blade fuse and two output leads.

This wiring harness is built to simplify installing one or two LED light bars on vehicles, boats, or any 12V applications. It pairs a sealed DT connector with a 12-foot cable, a waterproof on/off rocker switch, a pre-wired power relay and an inline blade fuse so you can connect lights quickly while keeping the electrical circuit protected. The kit is designed for hobbyists and installers who want a cleaner, safer hook-up than raw splices and improvised switches.

How does the Nilight harness make LED light bar installation easier?

The harness reduces splicing and soldering by providing a factory-made cable assembly with matched connectors. A sealed DT plug mates directly to compatible LED bars and the harness includes mounting-ready switch and relay connections.

• Pre-crimped DT connector for plug-and-play attachment to many light bars
• 12-foot cable length for flexible routing and front/rear mounting options
• On/off dash switch pre-wired to the relay for simple control
• Clear wiring layout included in the instructions for fast setup

What protective features are included to safeguard the vehicle electrical system?

This kit adds multiple layers of circuit protection so the lights won’t overload existing wiring. The included relay handles high current switching while the inline blade fuse protects against overcurrent and short circuits.

• Automotive-grade power relay reduces stress on the dash switch
• Inline blade fuse sized for the harness prevents damage from faults
• Sealed connectors help reduce corrosion risk in wet environments
• Robust gauge wiring designed to carry loads up to the kit’s rating

Can I run two LED light bars from this harness, and what are the limits?

The 10016W model includes two output leads so you can connect dual fixtures without splitting wires yourself. It is intended for combined loads under the kit’s rated wattage; check your light bars’ current draw to remain within safe limits.

• Two output leads support dual fixtures with a combined wattage limit
• Wiring gauge and relay selected to manage typical 12V accessory loads
• Recommended for setups where total wattage does not exceed the harness rating
• Use an appropriately rated fuse if you upgrade to higher-power lights

What vehicle types and environments is this harness suitable for?

Engineered for universal 12V systems, the harness works with cars, trucks, SUVs, ATVs, UTVs, boats and other 12V-equipped gear. Its sealed connectors and inline components make it adaptable for on-road and off-road environments, though correct mounting and routing are important for longevity.

• Universal compatibility with 12V lighting and accessory systems
• Sealed DT connector and inline fuse for water and dust resistance
• Long 12-foot lead for flexible placement across many vehicle types
• Ideal for off-road, marine, utility and aftermarket lighting projects

Who this is for: Installers, weekend mechanics and DIYers who want a reliable, plug-and-play wiring solution for mounting one or two LED light bars. If you prefer a clean, protected electrical setup without custom crimping or splicing, and you use 12V lighting that matches the harness’s current capacity, this kit simplifies the job while adding circuit protection and a convenient dash switch.