1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of the SHNJAUTO 3.0 Bi-LED Projector Lens. This product is designed to enhance vehicle lighting performance with its high/low beam functionality and precise light distribution. Please read this manual thoroughly before installation and use to ensure proper function and safety.
2. Product Overview
The SHNJAUTO 3.0 Bi-LED Projector Lens features a DOT compliant design, providing a clear cut-off line to prevent glare for oncoming drivers. It integrates high luminous chips for enhanced brightness and a robust cooling system for durability.
Key Features:
- DOT Compliance: Designed with a reflector and focus lens for a precise cut-off line, ensuring safety and compliance.
- High Brightness: Utilizes advanced high luminous chips for focused white light output.
- Efficient Cooling: Equipped with a Japan-made 9,000 RPM cooling fan and an aluminum heat sink to maintain optimal operating temperature and extend lifespan.
- Bi-LED Functionality: Provides both low and high beam capabilities from a single projector lens.


3. Safety Information
Observe the following safety precautions during installation and operation:
- Disconnect the vehicle's battery before beginning any electrical work.
- Wear appropriate personal protective equipment, including safety glasses and gloves.
- Ensure all connections are secure and properly insulated to prevent short circuits.
- Avoid touching the lens surface directly to prevent damage or smudges.
- Professional installation is recommended for optimal performance and safety.
4. Package Contents
Verify that all items are present in the package:
- 2 x 3.0" Bi-LED Projector Lenses
- 2 x Lock Rings
- 2 x LED Drivers
5. Setup and Installation
The 3.0 inch projector lens features a threaded-shaft style mount, allowing for installation in H4/H7/9005/9006 headlight housings. Some vehicles may require modifications to the headlight assembly for proper fitment.
General Installation Steps:
- Remove the existing headlight assembly from the vehicle.
- Carefully open the headlight housing to access the bulb area.
- Mount the Bi-LED projector lens into the headlight reflector using the provided lock ring. Ensure it is securely fastened and properly aligned.
- Connect the wiring as per the diagram below.
- Test the low and high beam functions before sealing the headlight housing.
- Re-seal the headlight housing to prevent moisture ingress.
- Reinstall the headlight assembly into the vehicle.
- Perform final beam alignment according to local regulations.
Wiring Diagram:

Product Dimensions:

6. Operation
The SHNJAUTO Bi-LED Projector Lens provides both low and high beam functions. The low beam offers a focused light pattern with a sharp, clear cut-off line to prevent blinding oncoming traffic. When the high beam is activated, a solenoid mechanism adjusts the internal shield, allowing for a wider and more intense light output for maximum visibility.

7. Maintenance
To ensure the longevity and optimal performance of your Bi-LED projector lenses, follow these maintenance guidelines:
- Cleaning: Periodically clean the exterior of the headlight lens with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the lens material.
- Inspection: Regularly inspect the wiring and connections for any signs of wear, corrosion, or damage.
- Environmental Factors: While designed for durability, extreme temperatures or prolonged exposure to harsh elements can affect performance.
8. Troubleshooting
If you encounter issues with your SHNJAUTO Bi-LED Projector Lens, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lights do not turn on | Loose wiring connection, no power supply, faulty LED driver. | Check all wiring connections. Verify power supply to the LED driver. Test with a known good LED driver if available. |
| High beam not activating | Solenoid wiring issue, faulty solenoid. | Inspect high beam wiring connections. Ensure the solenoid receives power when high beams are engaged. If issues persist, professional diagnosis may be required. |
| Dim or flickering light | Insufficient power, loose connection, LED driver malfunction. | Verify stable power supply. Check all connections for tightness. Replace LED driver if suspected faulty. |
If troubleshooting steps do not resolve the issue, please contact customer support for further assistance.
9. Specifications
| Specification | Detail |
|---|---|
| Brand | SHNJAUTO |
| Model | SHNJ-S9-HD |
| Wattage | 130 watts |
| Color Temperature | 5500K |
| Lumen Output | 22,000 LM |
| Lens Material | Glass |
| Vehicle Service Type | H4/H7/9005/9006 |
| Lifespan (Theoretical) | 80,000 Hours |
| Item Weight | 3.67 pounds |
| Package Dimensions | 10.91 x 8.27 x 4.02 inches |
10. Warranty and Support
SHNJAUTO offers a 30-day hassle-free return or exchange policy. For any questions or assistance, please contact our customer service. We provide 24-hour online support to help resolve any issues you may encounter.