Partswcgg 4" Round LED Trailer Tail Lights 10-Pack Red — 12-LED Waterproof Flush-Mount

Partswcgg 10-pack 4" round red LED trailer tail lights are waterproof, 12-LED, flush-mount lamps that provide stop, turn, brake and running light functions for 12V trailers and trucks.

These compact round LED lamps combine bright, energy-efficient illumination with a compact 4" inner-diameter design and included grommets and 3-prong pigtails for a near-ready installation. Built to IP65 splash-resistant standards and sized for a roughly 4-1/2" mounting hole, they suit trailers, pickup trucks, UTVs and many commercial vehicles. This product bundle contains ten identical tail lights so you can outfit multiple axles or keep spares on hand.

How do these lights perform on the road?

The 12 high-efficiency LEDs in each lens deliver sharper visibility than comparable incandescent lamps while drawing far less current. They handle standard trailer lighting roles — stop, turn, brake and tail — with distinct amber/red output where required by the vehicle wiring. The flush-mount profile limits snagging on cargo and the rubber grommet helps reduce vibration transfer.

• 12 LEDs per lamp for brighter, energy-efficient output
• Functions: stop, turn, brake, and running lights
• Flush-mount design with rubber grommet to absorb vibration
• IP65 splash-resistant housing for reliable road performance

What are the dimensions and installation requirements?

Each light has an outer grommet ring of approximately 5-1/8" with an inner lens diameter of roughly 4" and a thickness near 1-3/16". For a secure fit, plan to drill a 4-1/2" mounting hole and insert the included rubber grommet. Standard 3-prong wiring pigtails are supplied so you can connect to typical 12V trailer wiring harnesses.

• Outer grommet diameter: ~5-1/8"; inner lens: ~4"
• Thickness: ~1-3/16"; recommended hole: ~4-1/2"
• Includes round rubber grommets and 3-prong wire pigtails
• Flush-mount installation; requires standard drilling and wiring

Are these lights compatible with my vehicle and wiring?

These LEDs are designed for 12V DC systems and work with a wide range of vehicles including semi-trailers, utility trailers, enclosed trailers, horse trailers, pickups, UTVs and many heavy trucks. Wiring color guidance: white = ground, red = high-brightness circuit, black = low-brightness or running circuit. Each lamp accepts standard 3-prong trailer plugs for straightforward replacement or new installations.

• 12V DC compatibility for most trailers and light commercial vehicles
• Wiring color guide: white (ground), red (high), black (low)
• Accepts standard 3-prong plugs for easy swap-in
• Pack of 10 for multi-light installs or spares

How durable and weather-resistant are these LEDs?

The housings meet IP65 splash-resistant standards, offering solid protection from rain, road spray and dust. They are not designed for continuous submersion, so avoid underwater mounting or prolonged exposure below the waterline. The rubber grommet and flush profile help reduce wire stress and mechanical shock from bumps and vibration.

• IP65-rated for splash and dust resistance
• Not rated for underwater use—avoid submersion
• Rubber grommet reduces vibration and wire abrasion
• LEDs draw less current and have longer life than incandescent bulbs

Who this is for: This 10-piece set is ideal for fleet managers, trailer builders, and owners who need uniform, reliable rear lighting across multiple vehicles or axles. It's a practical choice for anyone replacing incandescent trailer lamps with more efficient LED units, those fitting new trailers, or operators who prefer to keep spare lights on hand for quick roadside repairs.