How to Install Underglow Lights: A Simple DIY Guide｜BLIAUTO Custom Lighting Installation Tutorial

In the wave of personalized and eye-catching car modifications, underglow lights have become a top choice for many auto enthusiasts. Not only do they make your vehicle stand out at night, but they also improve side visibility and ground illumination to some extent. So, is it complicated to install underglow lights? Actually, as long as you have basic hands-on skills, a DIY installation is absolutely doable.

Today, BLIAUTO brings you a comprehensive DIY guide for underglow light installation, helping you easily get the job done and light up your ride in style!

1. Preparation: Tools and Materials Checklist

Before installation, be sure to prepare the following tools and accessories:

l Basic Tools:

1. Phillips screwdriver / Allen wrench

2. Electric drill (for mounting the light strips)

3. Zip ties, double-sided tape, or clips

4. Multimeter (for checking the power source)

5. Wire stripper, electrical tape

l Accessories:

1. LED underglow light strip kit (Recommended waterproof/dustproof rating ≥ IP67)

2. Controller module (remote or APP control)

3. Fuse (5A–10A, depending on strip power)

4. Wire extension cables (depending on vehicle size)

2. Step-by-Step Installation (Example: 4-strip layout)

Step 1: Test the Light Strips

Before installation, connect the strips to your car battery and make sure they light up properly—avoid the frustration of finishing the job only to find out they don’t work.

Step 2: Choose Mounting Locations

Common light strip placements:

l Front and rear bumpers

l Side skirts or door sills

l Rear crossbeam undercarriage

✅ It’s recommended to mount the strips along the inner edge of the chassis—this keeps them hidden and protects against scraping or water ingress.

Step 3: Mount the Strips

Depending on the length, secure the strips using screws, zip ties, or 3M double-sided tape. Make sure:

The strips are snug against the undercarriage and don’t shake

They don’t interfere with tires, exhaust system, fuel lines, or moving suspension parts

Step 4: Wiring Connections

Following the product manual, route all strip wires into the control module. Run wiring along the vehicle frame to reduce exposure and wear.

❗Wiring Tips:

Wrap all wiring with electrical tape or corrugated tubing for protection

Avoid high-heat areas (e.g., near the exhaust pipe)

Make all connections waterproof

Step 5: Connect to Power

Common power options:

ACC (ignition): Lights turn on when the vehicle is started

Constant power (battery): Lights can be manually turned on anytime

Fuse box tap: Safer and avoids cutting into the original wiring

Use a multimeter to find the right power source and install a fuse to prevent overcurrent damage.

Step 6: Test the Lights and Controller

After powering up, test the lights and confirm the controller functions (color switching, flashing modes, brightness adjustment, etc.).

3. Installation Notes

Important things to keep in mind during installation:

All connections must be insulated and waterproof to prevent short circuits or leakage

Avoid direct light glare into others’ eyes—keep it soft and safe

Never mount on suspension or steering components

APP-controlled kits are recommended for easier customization

4. Vehicle-Specific Recommendations

Vehicle Type Recommended Setup No. of Strips Suggested Length

Compact Car 4-side full underbody setup 4 strips 60cm–90cm

SUV / Off-Road Add fender or rear emphasis 4–6 strips 90cm–120cm

Pickup / Truck Add bed/roof edge lighting 6+ strips ≥120cm

5. Maintenance Tips

Although most underglow lights are designed to be waterproof and dustproof, we recommend regular checks:

Look for loosened or detached strips

Inspect for scratches or damage on the light surface

Ensure the controller is dry and undamaged

Check for aging or frayed wires

Check your setup every 3 months—especially after rainy or snowy seasons.

6. Conclusion: DIY Isn’t Difficult—Precision and Safety Matter

DIY underglow light installation isn't as hard as it looks. By following the proper steps and paying attention to details, you can build your own unique lighting setup. BLIAUTO reminds all drivers: style matters, but safety and legality come first! Make sure your lighting isn’t overly bright, doesn’t interfere with other drivers, and complies with local road regulations.