This overhead view shows the crazy intensity of the Glass is Class watermelon lights installed on this Kenworth

CHOOSE YOUR STYLE

Glass is Class Gen 2

1

Alpha Series Lighting

Glass Is Class Gen 2 Watermelon Lights

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Alpha 360 white emergency light with strobe, rotation

2

Alpha Series Lighting

Alpha 360° Emergency Watermelon Lights

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360-Degree Double Fury LED Bulb Glass Watermelon Flush Mount Kit-Red/Blue

3

United Pacific

Glass Watermelon Lights

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Crystal-Comet 9 LED Dual Function Watermelon Light – Red w/Clear Lens

4

United Pacific

Plastic Watermelon Lights

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304 SS Above Door Dome Light Kit W/ 17 LED Double Fury Watermelon For 1994-2025 KW W900-Red & White LED

4

United Pacific

Full Size Watermelon Light Kits

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Flat Universal Watermelon Light Bracket

4

United Pacific

Watermelon Lights Accessories

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Choose Your Style

Alpha Series Lighting

Glass Is Class Gen 2 Watermelon Lights

The next generation of watermelon lights with brighter output & advanced heat dissipation.

Alpha series lighting

Alpha 360° Emergency Glass Watermelon Light

Tempered-glass star lens with 3 operating modes: steady, strobe, & rotate

United Pacific

United Pacific Glass Watermelon Lights

Classic dome-style marker lights built with real glass lenses for superior clarity and long-term durability.

United Pacific

United Pacific Plastic Watermelon Lights

Built with durable polycarbonate lenses & offering a balance of performance, affordability, and style.

United Pacific

United Pacific Watermelon Light Kits

Includes the bezel, mounting hardware, lens, and LED lighting — everything needed for a clean retrofit. 

Extra

Watermelon Light Accessories

Complete your setup with high-quality accessories for a seamless and reliable installation.

 
 

Popular Picks

Glass is class

The Next Evolution Of Lighting

Glass is Class Gen 2 watermelon lights feature the all-new AlphaFit Gen 2 LED system, delivering brighter output, improved sealing, advanced heat dissipation, and the cleanest starburst beam pattern in the industry.

Color options

Glass Is Class Pickup Truck Watermelon LED Light Kit w/ Harness & Bracket
On Sale
From: Original price was: USD 125.00.Current price is: USD 100.00.
On Sale
From: Original price was: USD 125.00.Current price is: USD 100.00.
On Sale
From: Original price was: USD 125.00.Current price is: USD 100.00.
On Sale
From: Original price was: USD 125.00.Current price is: USD 100.00.
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The First True Watermelon Emergency Light

The Alpha 360 is built for modern work trucks and display builds. Combining a real tempered-glass star lens with multi-mode LED control, Alpha 360 lights deliver three selectable functions in one compact unit.

 

Color options

United Pacific Glass Watermelon Lights

United Pacific Plastic Watermelon Lights

United Pacific Full Size Watermelon Light Kits

Peterbilt 389 Interior Watermelon Light SS Above Door Kit Assembly

AVAILABLE IN CANADA ONLY

A fully pre-wired, ready-to-install lighting upgrade that combines modern LED performance with premium stainless-steel craftsmanship. Designed as a direct replacement for the above-door and bunk panels on Peterbilt 389 models.

304 SS Above Door Dome Light Kit W/ 17 LED Double Fury Watermelon For 1994-2025 KW W900-Red & White LED

(94-26) Kenworth W900 Above Door Dome Light Kit With 17 LED Double Fury Watermelon

Designed specifically for 1994–2025 Kenworth W900 models, this kit brings exceptional visibility, rugged durability, and modern dual-color LED technology to your cab or sleeper.

304 SS Above Door Dome Light Kit W/ 17 LED Double Fury Watermelon For 2008-2017 FL Cascadia

(08-17) FL Cascadia Above Door Dome Light Kit With 17 LED Double Fury Watermelon

This dome light assembly combines rugged construction, weather-sealed electronics, and vibrant dual-color LED technology to deliver lasting performance and bold visual appeal.

304 SS Above Door Dome Light Kit With 2 X 17 LED Double Fury Watermelon For KW & PB Trucks-Amber & White LED

KW & PB Above Door Dome Light Kit With 2 X 17 LED Double Fury Watermelon

This rugged lighting kit features two high-intensity 17 LED Double Fury Watermelon Lights set in a durable polished stainless steel plate, providing maximum illumination and distinctive appearance.

304 SS Turn Signal Light Kit With 17 LED Double Fury Watermelon For 2008-2017 Freightliner Cascadia

(08-17) FL Cascadia Turn Signal Light Kit With 17 LED Double Fury Watermelon

Featuring a dual-color 17 LED Double Fury Watermelon Light, this kit is a premium replacement for your OEM turn signal lights.

Glass is class

Upgrade your rig with premium watermelon lights, the industry-standard dome-style marker light trusted across semi trucks, show builds, and custom big rigs.

Frequently Asked Questions About Watermelon Lights

Are watermelon lights street legal?

Yes, when used as clearance or marker lights emitting approved colors such as amber or red. Always check local regulations before running auxiliary colors.

What size are full-size watermelon lights?

Most full-size watermelon lights measure approximately 4 inches in diameter and use an industry-standard mounting bolt pattern.

What’s the difference between dual-color and dual-revolution lights?

Dual-color lights switch between two solid colors. Dual-revolution lights create rotating or starburst patterns and may use separate LED banks for each function.

Do watermelon lights fit Peterbilt and Kenworth trucks?

Yes. Watermelon lights are commonly installed on Peterbilt, Kenworth, Freightliner, Western Star, Mack, and International trucks.

The Ultimate Guide to Watermelon Lights

What Are Watermelon Lights?

Watermelon lights are dome-shaped clearance and marker lights commonly used on semi trucks and heavy-duty vehicles. The name comes from their rounded lens design, which resembles a slice of watermelon when illuminated.

They are primarily used as:

  • Clearance lights
  • Marker lights
  • Show lighting
  • Auxiliary lighting

Full-size watermelon lights provide greater visibility and a stronger visual presence than mini versions.

Why Choose LED Watermelon Lights?

Modern LED watermelon lights offer major advantages over incandescent bulbs:

  • Brighter output for increased visibility
  • Longer lifespan (reduced maintenance downtime)
  • Instant-on illumination
  • Lower amp draw
  • Reduced heat output
  • Improved reliability in vibration-heavy environments

For fleets and owner-operators alike, LED watermelon lights improve both safety and durability.

Glass vs Plastic Watermelon Lights

Glass Watermelon Lights

Best for:

  • Show trucks
  • Premium builds
  • Long-term clarity

Benefits:

  • Superior optical clarity
  • Classic starburst effect
  • Excellent scratch resistance

Consideration: Heavier than plastic and can crack under impact.

Polycarbonate (Plastic) Watermelon Lights

Best for:

  • Daily drivers
  • Work trucks
  • Harsh road conditions

Benefits:

  • Lightweight
  • Highly impact resistant
  • More forgiving under debris strikes

Consideration: May scratch over time without protective coating.

Both options are widely used across the industry and share standard mounting compatibility.

What Are Dual Revolution Watermelon Lights?

Dual revolution watermelon lights combine two lighting functions in one housing.

  • Operate as a legal amber or red marker light
  • Switch to a secondary show color (blue, green, purple, etc.)
  • Use a secondary wire trigger for color override
  • Create a rotating or starburst lighting pattern

These lights are extremely popular for custom show trucks, parades, tow trucks, road service vehicles, and display builds.

When used on public roads, ensure the color complies with local transportation laws.

Full-Size vs Mini Watermelon Lights

Full-Size Watermelon Lights

  • Larger diameter
  • Greater brightness
  • More visual presence
  • Ideal for sleeper panels, air cleaners, and cab corners

Mini Watermelon Lights

  • Compact mounting size
  • Ideal for tight areas
  • Perfect for pickups and frame rails
  • Match styling with full-size lights

Explore matching mini watermelon lights to complete your build.

Are Watermelon Lights Interchangeable Between Brands?

Yes — in most cases.

Full-size watermelon lights follow an industry-standard mounting diameter and bolt pattern. That means many models from:

  • Trux
  • Legendary
  • RoadWorks
  • United Pacific
  • Double Fury
  • Alpha Series

…can be swapped without modifying brackets. Always verify dimensions before ordering.