1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of your Nilight 26-inch 540W 50000LM LED Light Bar. Please read these instructions thoroughly before use and retain them for future reference.

Figure 1: Nilight 26-inch LED Light Bar with packaging.
2. Product Features
- Beam Pattern: Features a combination beam with a triple row design and nest reflector cups in the middle for enhanced light distribution.
- Reflector Design: Upgraded reflector cups with broad reflective plates on both sides allow for multi-angle light refraction, suitable for ambient illumination.
- Mounting: Equipped with an adjustable mounting bracket that can be slid to offer flexible positioning.
- Durability: IP67 waterproof rating, efficient cooling system, and a die-cast aluminum alloy housing for extended lifespan.
- Lifespan: Designed for over 30,000 hours of operation.

Figure 2: Internal components and reflector cup design for optimal light output.

Figure 3: Waterproof construction details, including silica gel strip and sealed wiring.

Figure 4: All-aluminum alloy streamline design for effective heat dissipation.
3. Package Contents
The package includes the following items:
- 1 x 26-inch LED Light Bar
- Mounting Brackets
4. Specifications
| Attribute | Value |
|---|---|
| Model | 18025C-A |
| Color | 26Inch Light White |
| Shape | Rectangular |
| Material | Iron and Cast Iron (Housing: Aluminum) |
| Light Source Type | LED |
| Power Source | DC adapter |
| Voltage | 30 Volts |
| Brightness | 50000 Lumens |
| Light Source Wattage | 540 Watts |
| Mounting Type | Bracket Mount |
| Waterproof Rating | IP67 |
| Item Weight | 4.33 pounds (1.97 Kilograms) |
| Package Dimensions | 27 x 4.6 x 4.6 inches |

Figure 5: Detailed dimensions of the light bar and mounting components.
5. Installation
Proper installation is crucial for the performance and longevity of your LED light bar. It is recommended to have this product installed by a qualified professional if you are unfamiliar with automotive electrical systems.
5.1 Safety Precautions
- Disconnect the vehicle's battery before starting any electrical work.
- Ensure the mounting location is secure and can support the weight of the light bar.
- Avoid mounting in locations that obstruct the driver's view or interfere with vehicle safety features.
- Use appropriate wiring gauges and fuses to prevent electrical overload.
5.2 Mounting Steps
- Select Mounting Location: Choose a suitable location on your vehicle (e.g., roof, bumper, grille) that provides optimal light projection and does not interfere with vehicle operation.
- Assemble Brackets: Attach the adjustable mounting brackets to the light bar using the provided hardware.
- Secure Light Bar: Position the light bar with the assembled brackets onto the chosen mounting surface. Mark and drill holes if necessary. Secure the brackets firmly to the vehicle.
- Adjust Angle: Adjust the light bar to the desired angle for optimal illumination. The brackets allow for a 45-degree adjustment. Tighten all bolts securely once the angle is set.

Figure 6: Illustration of the adjustable mounting bracket and basic installation steps.
5.3 Wiring Connection
- Connect the positive (+) wire of the light bar to a fused power source (e.g., battery, auxiliary fuse box) via a relay and switch.
- Connect the negative (-) wire of the light bar to a suitable ground point on the vehicle chassis.
- Ensure all connections are secure and insulated to prevent short circuits.
6. Operation
Once installed and wired correctly, operate the light bar using the connected switch. The light bar provides a powerful illumination suitable for off-road driving, work light applications, and enhancing visibility in low-light conditions.

Figure 7: Examples of the light bar in operation on different vehicles.
Video 1: Official Nilight video demonstrating the durability and robustness of the LED light bar through various tests including impact, grinding, and water immersion.
Video 2: Official Nilight video showcasing the light bar's performance during night driving on a village road, highlighting its illumination capabilities.
7. Maintenance
- Cleaning: Regularly clean the lens of the light bar with a soft cloth and mild soap to maintain optimal light output. Avoid abrasive cleaners.
- Inspection: Periodically check all mounting hardware and electrical connections for tightness and corrosion. Tighten any loose fasteners and clean any corroded terminals.
- Wiring: Inspect wiring for any signs of wear, fraying, or damage. Replace damaged wiring immediately to prevent electrical hazards.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Light bar does not turn on. | No power, loose connection, blown fuse, faulty switch. | Check power supply, inspect all wiring connections, replace fuse, test switch functionality. |
| Light output is dim or flickers. | Low voltage, poor ground connection, damaged wiring. | Verify voltage at the light bar, ensure a solid ground connection, inspect and repair wiring. |
| Moisture inside the lens. | Seal compromise. | Contact customer support for assistance. |
9. Warranty and Support
Nilight products are designed for reliability and performance. For warranty information, technical support, or any inquiries regarding your LED light bar, please refer to the official Nilight website or contact their customer service directly. Keep your purchase receipt as proof of purchase.
For additional information, visit the Nilight Store on Amazon.





