Product Overview
Many red watermelon lights on the market rely on multiple small diodes and plastic construction. For example, a typical clear red star‑burst LED light uses 19 diodes, has a polycarbonate lens, is DOT compliant and offers stop/turn/tail functions with a three‑year warranty. Other universal flush‑mount kits use a standard 1157 bulb, two wire leads and glass lenses but provide only a six‑month warranty and are limited to 12‑volt systems. Smaller 1‑1/2 inch lights use just six diodes, rely on scratch‑resistant glass, and hook up with bullet connectors. These lights are adequate for basic markers but can’t match the intensity, dual‑voltage flexibility or robustness demanded by today’s show trucks and heavy‑duty rigs.
The Gen 2 Red/Red Glass is Class light addresses these shortcomings by combining a tempered‑glass star lens with a powerful AlphaFit G2 LED bulb. It delivers a dark, uniform red beam without the dark spots or pixelated look of multi‑diode arrays, and its 3‑wire design offers both marker and high‑power brake/turn modes on 12‑V or 24‑V systems. Advanced cooling and positive‑pressure venting allow continuous high‑power operation without overheating, while the IP68 seal keeps moisture and dust out. Whether you’re upgrading cab lights, brake lights or air‑cleaner mounts, this Gen 2 light provides unmatched brightness, reliability and customisation.
Key Features & Benefits
Dark Red Lens with Matching Red LED Chip – Deep, Rich Illumination
The tempered‑glass lens is tinted deep red, and the red AlphaFit G2 LED chip matches this hue perfectly. Together they produce an intense, cohesive red glow that’s darker than a clear lens with red LED, ideal for show trucks and custom builds. The radial prisms in the star‑burst lens focus the light into a wide, crisp beam with no central dark voids—a major improvement over multi‑diode lights.
Dual‑Function AlphaFit G2 Bulb (Marker & Brake/Turn)
At the heart of the Gen 2 light is the AlphaFit G2 H11‑base bulb. Its three‑wire harness enables both a 15 W low‑power marker mode and a 20 W high‑power brake/turn mode, giving you flexibility to wire the light as a marker/brake combo or run at full intensity continuously. In contrast, many flush‑mount kits use a standard 1157 bulb with 2‑wire leads or small 1‑1/2 inch lights with six diodes, limiting functionality and brightness. The G2 also operates on 12‑volt and 24‑volt systems, eliminating the need for voltage converters.
Advanced Heat Dissipation & Positive‑Pressure Cooling
The AlphaFit G2 retains the renowned cooling system of the original AlphaFit: a radiator‑fin heat sink combined with an internal cooling fan draws heat away from the LED chip. The enlarged anodized‑aluminum body acts as a thermal reservoir, while four check‑valve vents create positive pressure to expel condensation and keep the housing moisture‑free. This allows the light to operate at full 20 W power without overheating—something multi‑diode lights and 1157‑bulb kits can’t match.
Real Tempered‑Glass Star Lens & Optimised Beam Pattern
Rather than plastic or polycarbonate, this light uses a tempered‑glass lens with a star‑burst pattern. The straight PCB design of the AlphaFit bulb eliminates dark spots, giving a wide, even beam. Competitors with polycarbonate lenses can yellow or crack and rely on clusters of diodes that create pixelated light. Our glass lens is scratch‑resistant and retains clarity for years.
IP68 Weatherproof & Anodized‑Aluminum Housing
The Gen 2 housing employs a silicone gasket, anodized‑aluminum base and check‑valve vents to achieve an IP68 rating. It keeps out dust and water even when submerged, unlike competitor lights that use polycarbonate lenses and often rate IP67. The anodized finish resists corrosion and helps dissipate heat.
Universal Fit & 12/24‑Volt Compatibility
Using a standard H11 base, the AlphaFit G2 bulb attaches easily to various mounting brackets. The color‑coded three‑wire pigtail (black = ground, blue = marker, yellow = brake/turn) makes installation straightforward. It fits 12‑V and 24‑V systems, making it suitable for semi‑trucks, show rigs, tractors and custom cars. Slim packaging allows installation behind air cleaners and in tight spaces.
New Color Options & Flexible Customisation
Along with Red/Red, the Gen 2 Glass is Class range includes Red/White, Amber/Amber, Amber/White, Clear/Amber, Clear/Red and Clear/White. Each combination lets you tailor beam color and lens tint to your build—whether you want a dark red lens, a clear lens with red chip or a contrasting red/white output.
Performance / Compatibility / Use-Case
The Gen 2 Red/Red light delivers maximum brightness and rich color. Where competitor star‑burst lights use 19 small diodes and run only on 12 V, the AlphaFit G2’s single high‑output chip produces a strong, uniform beam at 20 W on high‑power mode and 15 W on low. Its dual‑voltage capability means you can install it on both standard vehicles and heavy‑duty equipment. The positive‑pressure vents prevent condensation, making the light ideal for wet or cold climates. Use it as a brake/turn light, marker, or air‑cleaner lamp—the durable design stands up to vibration, road grime and high‑pressure washing.
Installation / Fitment / Technical Details
Installation is straightforward: mount the light using your existing watermelon‑light bracket or our optional bracket (sold separately). The included three‑wire pigtail connects easily—ground (black), marker (blue) and brake/turn (yellow). To run the light at full brightness constantly, tie the yellow wire into your running‑light circuit and cap the blue wire. The light draws 15 W on low and 20 W on high, with built‑in electronics handling both 12‑volt and 24‑volt inputs. A standard H11 base ensures future bulb replacements are simple.
Build Quality / Warranty
Every Gen 2 light is assembled with a tempered‑glass lens, anodized‑aluminum housing, internal fan, radiator fins and check‑valve vents. These components deliver durability, heat dissipation and moisture resistance. The light comes with a one‑year warranty, surpassing the six‑month warranties found on many flush‑mount kits and matching or exceeding warranties on small 1‑1/2 inch lights. Note: like all Glass is Class lights, this product is extremely bright and not SAE/DOT approved; use it for off‑road and show applications.
Warranty: 1-Year Limited Warranty
Designed and validated by Alpha Series Lighting for real-world truck environments.
What’s Included
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(1) Glass is Class Gen 2 Watermelon Light – Red Lens / Red LED (pre‑assembled)
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(1) Pre‑installed AlphaFit G2 H11 LED bulb with 3‑wire pigtail
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(1) Silicone gasket and check‑valve vents for IP68 sealing
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Integrated cooling fan and radiator fins
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Mounting bracket not included – see our accessories for compatible brackets
Frequently Asked Questions
How does the Red/Red variant differ from Red/White and Clear/Red options?
The Red/Red light uses a red glass lens with a matching red LED chip, creating the deepest possible red. The Red/White variant pairs a red lens with a white LED chip for a slightly lighter red output, while Clear/Red uses a clear lens with a red chip, producing a brighter red with less tint. All variants share the same AlphaFit G2 bulb, dual‑function wiring and IP68 construction.
Will the red glass lens fade or discolor over time?
No. The lens is made from tempered glass, which is scratch‑resistant and does not fade or yellow like polycarbonate. Competitor lights using polycarbonate lenses can crack or discolor over time. Our glass lens maintains its deep red color for years.
Can I use this light as a brake light on a 24‑V truck?
Yes. The AlphaFit G2 bulb is rated for 12 V and 24 V, so you can wire the yellow lead into your brake/turn circuit on a 24‑V system without additional resistors. The high‑power mode (20 W) is perfect for brake or turn signals, while the low‑power mode (15 W) is ideal for marker or accent lighting.
Is this light waterproof and safe to pressure‑wash?
Yes. The Gen 2 housing uses a silicone gasket, anodized‑aluminum base and check‑valve vents to achieve an IP68 rating. It is dust‑tight and can withstand submersion, so you can wash your truck or tractor without worrying about moisture intrusion.
Are these lights street‑legal?
No. The Gen 2 Glass is Class lights are designed for show and off‑road use only and are not SAE/DOT approved. Competitor lights with 19 diodes and polycarbonate lenses are DOT compliant, but they lack the extreme output and custom appearance of this product.
How do I replace the bulb or change colors later?
The AlphaFit G2 bulb uses a standard H11 base, so replacement bulbs are easy to swap. Simply remove the old bulb, insert the new one and reconnect the pigtail. Replacement bulbs in various colors (white, amber, red) will be available separately.
