AlphaFit LED Watermelon Light Bulb (Gen 2) | White
High-output AlphaFit Gen 2 LED bulb engineered for glass watermelon light housings. Uses dual LED banks and a compact emission surface to produce a uniform star-beam pattern with no center void.
Dual-Color LED Control System
Three-wire configuration enables true dual-color control without switchback behavior.
Features include:
- Dedicated LED bank per color
- Full-power operation on each circuit
- Secondary circuit overrides when both are powered
Supports clean integration with marker, auxiliary, or switched circuits.
23W High-Output Gen 2 Platform
Each active circuit operates at full output.
Specifications:
- 23W per active color
- Stable output with no brightness-based switching
- Consistent intensity across operating conditions
Gen 2 platform is machine-built for improved reliability and consistency.
Focused Optical Output for Glass Lenses
Designed specifically for glass star-pattern watermelon lenses.
Key characteristics:
- Compact emission surface for precise optical control
- Full beam fill with no center dark spot
- Optimized for radial prism (starburst) lenses
Produces a clean, uniform beam compared to multi-diode bulbs.
LED Chip Bank Configuration
Each side of the bulb includes:
- One dedicated LED bank per color
- Independent circuit control
Prevents color blending and maintains output clarity.
Advanced Thermal Management System
Hybrid cooling system supports continuous operation.
Cooling components include:
- Oversized anodized aluminum housing
- Internal active cooling fan
- Passive heat sink beneath LED chips
Maintains thermal stability under sustained high output.
Positive-Pressure Venting System
Active airflow system manages internal moisture.
Features include:
- Positive-pressure airflow within housing
- Condensation reduction during operation
- Moisture expelled through internal circulation
Improves durability in varying environmental conditions.
Application & Use Case
Designed for:
- Glass is Class watermelon light housings
- Marker, signal, and auxiliary lighting
- Show truck and off-road builds
⚠️ Not intended for plastic or reflector-style housings.
Installation & Technical Details
- Voltage: 12V / 24V compatible
- Power Draw: 23W (active color)
- Base Type: H11-style
- Wiring:
- Ground
- Primary color
- Secondary color (override)
No external resistors required for standard operation.
Build Quality & Materials
- Anodized aluminum housing
- Integrated active cooling fan
- Passive thermal structure
- Precision-machined internal components
Gen 2 design improves durability, output consistency, and failure resistance.
What’s Included
- 1 × AlphaFit LED Bulb (Gen 2) | White
- Integrated active cooling system
- Pre-wired 3-wire lead
Note: Glass lens and housing sold separately unless purchased as a complete kit.
Warranty Coverage
Backed by a 1-year limited warranty from Alpha Series Lighting.















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