Nilight 4" Round Trailer Tail Light 2PCS 24LED Red Brake

Nilight 4" Round Trailer Tail Light 2PCS delivers bright, sealed red LED running, brake and turn signals for trailers and trucks in a compact, flush-mount 4" housing.

These two 4-inch Nilight tail lights combine 24 high-output SMD LEDs with a transparent lens and IP67 sealed construction to give clear, visible signaling in wet or dusty conditions. They offer two brightness modes—low for marker/running lights and high for brakes and turn signals—so following drivers can easily detect changes. The lights mount flush into a prepared 4.57" diameter hole and connect via a 3-prong plug for straightforward installation on 12V DC vehicles.

How bright are these Nilight lights, and how do they improve visibility?

Each lamp contains 24 SMD LEDs paired with a high-transparency lens for stronger light output and better heat dissipation than older designs. The brightness difference between the low and high modes gives clear visual cues for running lights versus braking or turning.

• 24 red SMD LEDs per light for concentrated illumination
• Transparent lens maximizes light transmission
• Dual-intensity modes: low for running, high for brake/turn
• Improved heat dissipation extends LED lifespan

What makes the Nilight tail light durable in bad weather?

The housing and lens are ultrasonically sealed to meet an IP67 waterproof rating, keeping out rain, splashes and dust when the rear plug is tightened. This level of protection suits frequent outdoor use and harsh environments, including road salt and heavy rain.

• IP67-rated sealed construction resists water ingress
• Ultrasonic joining between lens and housing for a tight seal
• Back plug designed to be secure when tightened
• Suitable for boats and off-road use where moisture is common

How do I install the 4" Nilight trailer tail lights?

Installation is designed to be simple: cut a 4.57" diameter hole, set the grommet, insert the light, then connect the three-wire plug to your 12V wiring. The flush-mount design sits nearly level with the mounting surface for a clean look and better protection against snagging.

• Required hole diameter: 4.57 inches; depth: 1.89 inches
• Includes grommet and 3-prong plug for connection
• Three-wire lead for running/stop/turn signals
• Flush-mount reduces exposed edges and snag points

What vehicles and functions are these Nilight lights compatible with?

These 4-inch LED units work on 12V DC systems and are commonly used on trailers, trucks, tractors and other utility vehicles. They cover running light, stop/brake, turn signal and tail light roles in one compact fixture.

• Fits trailers, semi-trailers, horse trailers, travel trailers, dump trucks
• Compatible with tractors, special vehicles and boats (12V systems)
• Replaces separate marker/stop/turn fixtures with a single light
• Sold as a 2-piece pack for axle-symmetric installations

Who is this for: The Nilight 4" Round Trailer Tail Light 2PCS suits vehicle owners, fleet operators and DIY mechanics who want reliable, high-visibility rear lighting that stands up to weather and repeated use. It appeals to anyone upgrading old incandescent fixtures to long-lasting LEDs, installers seeking a flush, low-profile fit, and users who need a simple plug-and-play solution for 12V trailers, trucks, boats and specialty equipment.