The Nilight 4-Inch Round Trailer Light (Pair) offers exceptional brightness and reliability, equipped with 24 high-performance SMD LEDs that ensure superior lighting and heat dissipation. Combined with a high-transparency lens, it delivers outstanding illumination, significantly enhancing driving safety. Designed with dual brightness modes, the light functions as a low-brightness tail light and a high-brightness turn signal light, allowing vehicles behind to easily detect changes in brightness.

Installation is straightforward: prepare a 4.57-inch diameter hole with a depth of 1.89 inches, insert the grommet and light in sequence, and connect the 3-prong plug with the provided wiring. The light features a sealed IP67 waterproof design, achieved through ultrasonic bonding of the lens and housing, effectively preventing water ingress—even in severe weather conditions.

Perfectly suited for 12V DC vehicles, including trucks, trailers, tractors, semi-trailers, horse trailers, travel trailers, dump trucks, boats, and other special vehicles, this light ensures optimal performance as a tail light or turn signal light. The protrusion on the outer ring of the light aligns securely with the groove in the grommet, preventing displacement, while the tightly fitting back plug resists loosening.

With its completely sealed and waterproof build, the Nilight 4-Inch Round Trailer Light is designed to isolate moisture, ensuring long-lasting performance and reliability. Backed by a 2-year warranty from Nilight, this light offers an easy installation process with included screws, nuts, and a standard 3-prong plug, making it a dependable choice for enhanced safety and visibility on the road.