1. Introduction
This instruction manual provides detailed guidance for installing and operating your YEABRICKS LED Light Kit, specifically designed for the LEGO 76419 Harry Potter Hogwarts Castle and Grounds building model. This kit enhances the visual appeal of your LEGO set by adding illumination to various sections.
Important Note: The LEGO 76419 Harry Potter Hogwarts Castle and Grounds building model is NOT included with this LED light kit. This product contains only the lighting components.

Image 1.1: The LEGO Hogwarts Castle and Grounds model illuminated by the YEABRICKS LED Light Kit.

Image 1.2: Visual comparison of the LEGO model before and after the LED light kit installation.
2. Package Contents
Please verify that all components listed below are present in your package before beginning installation. If any parts are missing or damaged, please contact customer support.

Image 2.1: Overview of the YEABRICKS LED Light Kit package contents.
- LED Light Kit components (various lights, wires, connection boards)
- Battery Box (requires 3x AA batteries, not included)
- USB Power Cable
- Installation Tools (e.g., brick separator, tweezers)
- User Guide (physical copy or QR code for digital access)
3. Safety Information
Please read and understand the following safety precautions before installing or using the LED light kit:
- Small Parts Warning: This product contains small parts and is not suitable for children under 3 years of age due to choking hazards. Adult supervision is recommended during installation.
- Battery Safety:
- Ensure correct battery polarity when inserting batteries into the battery box.
- Do not mix old and new batteries, or different types of batteries.
- Remove batteries if the product is not used for an extended period.
- Dispose of used batteries responsibly according to local regulations.
- Electrical Safety:
- Do not modify the wiring or components of the light kit.
- Use only the provided power cable and battery box.
- Keep the light kit and its components away from water or other liquids.
- Careful Handling: The wires and small LED components are delicate. Handle them with care to avoid damage during installation.

Image 3.1: Safety warnings and certifications displayed on the product packaging.
4. Installation Guide
Installing the YEABRICKS LED Light Kit requires careful attention to detail and may involve partially disassembling and reassembling sections of your LEGO 76419 model. We highly recommend using the digital instructions for the most comprehensive guidance.
4.1 Accessing Detailed Instructions
For step-by-step instructions, including both PDF and video guides, please scan the QR code provided in your package or visit our official instruction page:
Official YEABRICKS Instruction Page

Image 4.1: Instructions for accessing PDF and video guides.
4.2 General Installation Tips
- Prepare Your Workspace: Ensure a clean, well-lit area with enough space to work on your LEGO model.
- Review Instructions: Before starting, thoroughly review the entire instruction guide (PDF or video) to understand the process.
- Handle with Care: The small wires and LED components are delicate. Avoid excessive pulling or bending.
- Test Connections: Periodically test the lights during installation to ensure all connections are secure and functional.
- Cable Management: Route wires carefully between LEGO bricks to conceal them and prevent damage. Use the provided tools for precise placement.
- Patience is Key: Installation can be intricate. Take your time and follow each step precisely.

Image 4.2: Detailed view of installed lights within the model.
5. Operating Instructions
Once the LED light kit is fully installed, powering it on is straightforward.
5.1 Powering the Light Kit
- Insert Batteries: Open the battery compartment on the battery box. Insert 3x AA batteries (not included), ensuring correct polarity (+/-). Close the compartment securely.
- Connect Power: Connect the USB power cable from the light kit to the battery box or a compatible USB power source (e.g., USB wall adapter, power bank).
- Activate Lights: Locate the power switch on the battery box or the main control board (if applicable, refer to specific installation guide for exact location). Flip the switch to the "ON" position to illuminate your LEGO model.
To turn off the lights, simply flip the power switch to the "OFF" position or disconnect the power source.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your LED light kit.
- Cleaning: Gently dust the illuminated LEGO model and light components with a soft, dry brush or cloth. Avoid using liquids or abrasive cleaners.
- Battery Replacement: If the lights dim or stop working, replace the batteries in the battery box. Always replace all batteries at the same time with new ones of the same type.
- Storage: If storing the LEGO model with the light kit for an extended period, remove the batteries from the battery box to prevent leakage.
- Wire Inspection: Periodically check visible wires for any signs of damage or wear. If damage is found, discontinue use and contact support.
7. Troubleshooting
If you encounter issues with your YEABRICKS LED Light Kit, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lights do not turn on. |
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| Some lights are not working. |
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| Lights are flickering or dim. |
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If these solutions do not resolve the issue, please contact YEABRICKS customer support for further assistance.
8. Product Specifications
- Brand: YEABRICKS
- Model Number: LLK609
- Compatibility: Designed for LEGO Set 76419 Harry Potter Hogwarts Castle and Grounds
- Material: Plastic
- Item Weight: Approximately 5.9 ounces (167 grams)
- Product Dimensions (Packaging): Approximately 6.3 x 4.3 x 1.18 inches (16 x 10.9 x 3 cm)
- Power Source: Battery Box (requires 3x AA batteries, not included) or USB power
- Special Features: Non-toxic materials
- Recommended Age: 6 years and up (due to small parts)
9. Warranty and Customer Support
YEABRICKS is committed to providing high-quality products and excellent customer service.
9.1 Free Replacement Policy
We offer complimentary replacements for any quality issues, such as missing parts or non-functional lights. Please retain your proof of purchase.
9.2 Contacting Customer Support
If you have any problems, difficulties, questions, or suggestions regarding the product, please do not hesitate to contact us. Our customer support team is available to assist you.
- Refer to the service card included in your package for specific contact details.
- You can also reach out through the platform where you purchased the product.

Image 9.1: Information on customer support and replacement policy.