Dongfeng VR Right Front Combination Light Assembly 3772020-C1100

This combination light assembly integrates three core lighting functions in one compact unit: high beam, low beam, and front turn signal, along with a daytime running light (DRL) for enhanced safety. The high beam uses a 60W halogen bulb (or optional LED variant) to deliver a long-range beam pattern, illuminating up to 150 meters ahead—critical for night driving on rural or unlit highways. The low beam, with a 55W bulb, features a cut-off design that prevents glare to oncoming vehicles while providing wide, even illumination of the road surface. The amber turn signal (21W) emits a bright, flashing light with a 120° visibility angle, ensuring other drivers can easily detect lane changes or turns. The DRL, powered by energy-efficient LED chips, operates at 10W and automatically activates when the engine starts, improving the vehicle’s conspicuity during daytime hours, especially in foggy or overcast conditions

Constructed to withstand the rigorous operating conditions of commercial trucks, the 3772020-C1100 assembly features a high-impact polycarbonate (PC) lens and an ABS plastic housing. The PC lens offers superior resistance to scratches, impacts, and UV radiation—preventing yellowing or cracking even after prolonged exposure to sunlight, rain, or road debris. The ABS housing is corrosion-resistant and lightweight, reducing the overall load on the vehicle’s front end while maintaining structural integrity. Both materials are tested to withstand extreme temperature ranges (-40°C to 80°C), ensuring reliable performance in freezing winter conditions or hot summer climates, a key requirement for commercial trucks that operate across diverse geographic regions

The light assembly’s optical system is engineered to meet international safety standards (including ECE R112 and GB 4785) for light intensity, beam pattern, and color temperature. The high and low beams use a parabolic reflector design that focuses light precisely, minimizing light scatter and maximizing road coverage. The turn signal’s amber color (with a wavelength of 585-595 nm) is highly visible to the human eye, even in low-light conditions, while the DRL’s white light (6000K color temperature) meets brightness requirements (150-300 cd) to ensure the vehicle is seen from a distance of up to 500 meters. Additionally, the assembly’s waterproof rating of IP67 ensures complete protection against dust ingress and temporary submersion in water (up to 1 meter for 30 minutes), preventing internal electrical damage from rain, snow, or road splashes—critical for maintaining lighting functionality in wet weather

Designed with ease of maintenance in mind, the 3772020-C1100 assembly allows for tool-free bulb replacement: the rear access panel can be removed by hand, providing quick access to the halogen or LED bulbs without disassembling the entire housing. The assembly’s wiring connector is equipped with a secure locking mechanism that prevents accidental disconnection due to vehicle vibration, a common issue in commercial truck applications. Furthermore, the PC lens is treated with an anti-fog coating that reduces condensation buildup inside the housing, ensuring clear light output even in humid conditions. Under normal operating conditions, the assembly boasts a service life of 30,000+ hours for LED components and 2,000+ hours for halogen bulbs, reducing the frequency of replacements and minimizing vehicle downtime—essential for commercial fleets focused on operational efficiency