Super Bright Visibility & Premium Look — Each cab roof light features 6 high-power 3528 SMD LEDs with individual round pearl-shaped reflectors for crisp, even light distribution and a clean, custom appearance. Dramatically improves nighttime road visibility and makes your truck stand out safely. Easy Plug-and-Play Installation (Even with Minor Variations) — Direct replacement for 2004 VN / 2003-2020 VNL trucks; if plugs don't perfectly match, simply cut and wire together for a quick, reliable fit. No major modifications needed—ideal upgrade from dim factory incandescents. Energy Efficient & Cooler Running — Advanced LEDs deliver brighter output, instant-on response, and lower power draw with significantly less heat compared to traditional bulbs—saving energy and extending bulb life for long-haul reliability. Fully Waterproof & Weatherproof Durability — Rugged poly-carbonate lens and sealed IP65-rated housing withstand heavy rain, snow, dust, and road vibrations—built tough for year-round performance on highways or job sites. Broad Compatibility for Trucks & More — Perfect fit for Volvo 2003-2020 VNL/VN series; also works on many other 12V applications including semi-trucks, trailers, tractors, dump trucks, and specialty vehicles. Cab marker / top clearance / roof running lights.