Nilight 4" Round LED Trailer Tail Lights 2PCS Red Grommet Mount — IP67 Waterproof, Piranha LEDs

Nilight 2PCS 4-inch round LED trailer tail lights are compact, grommet-mounted red taillights that combine bright Piranha LEDs with an IP67 waterproof housing for reliable tail, brake and turn signaling on 12V vehicles.

These two 4" LED lights replace conventional trailer lamps with a low-profile, surface-mount design that fits a 4.3" diameter hole and 2" depth. Each lamp uses upgraded Piranha LEDs to deliver stronger illumination, clearer brake/turn output and a long operating life. The silicone-sealed body and IP67 rating protect the circuitry from dust and heavy rain, making them suitable for trailers, trucks, tractors and other 12V work vehicles.

How bright are these lights and what makes their LEDs different?

Each light features 12 upgraded Piranha LEDs engineered for wider beam angles and improved heat dissipation, which increases visible output without sacrificing longevity. The design offers high-brightness output for brake and turn signals and a lower-intensity tail mode for continuous running.

• 12 Piranha LEDs per unit for greater intensity
• Wider light spread for better side and rear visibility
• High/low brightness modes: bright for brake/turn, dim for tail
• Improved heat dissipation extends LED lifespan

What does the grommet mount installation involve?

Installation is straightforward: press the rubber grommet into a 4.3" diameter hole (2" depth), seat the lamp into the grommet, then plug and wire the three-prong connector to your vehicle. No complicated brackets are needed, and the surface-mount style keeps the lamp snug against the trailer face.

• Hole requirement: 4.3" diameter, 2" depth
• Plug-and-play 3-prong connector for quick wiring
• Rubber grommet creates a secure, vibration-resistant mount
• Surface-mount avoids bulky external brackets

Are these lights weatherproof and durable for outdoor use?

The housings are silicone sealed and rated IP67, so they resist dust ingress and survive temporary immersion in water. That makes them suitable for roadside hauling, wet-weather towing and dusty work environments where corrosion and moisture are concerns.

• Silicone-sealed housing for long-term protection
• IP67 rating: dust-tight and waterproof to 1 meter temporary immersion
• Robust lens and shell resist road debris and vibration
• Low-profile shape reduces snag points and damage risk

Which vehicles and circuits are these lights compatible with?

These lights are built for 12V DC systems and function as tail, brake and turn signals on a wide range of trailers and trucks. They fit utility trailers, horse trailers, travel trailers, dump trucks, tractors, semi-trailers and specialty vehicles, provided you can accommodate the grommet hole size.

• Compatible with standard 12V DC vehicle electrical systems
• Common applications: trailers, trucks, RVs, agricultural and specialty vehicles
• Works as combined tail, brake and turn light (3-wire hookup)
• Confirm 4.3" hole and 2" depth before purchase

Who is this for? These Nilight 4-inch round LED trailer tail lights suit vehicle owners who need compact, bright, weatherproof replacement lamps for towing and hauling. If you want an easy surface-mount upgrade with a sealed housing, improved LED output and plug-ready wiring for a 12V system, these lights are a practical choice for everyday road use and demanding outdoor work.