Partsam 4" Round LED Trailer Tail Lights Kit — 12pcs Red 24-LED Sealed Flush-Mount, Waterproof 12V

Partsam 12-piece set of 4-inch round 24-LED sealed trailer tail lights provides stop, turn and running functions in a durable, waterproof package for 12V vehicles.

These compact, multi-function LED lamps are built for trailers, trucks, RVs and boats that need bright, reliable rear lighting in a small sealed housing. Each 4" round fixture contains 24 LEDs arranged to deliver clear stop/turn brightness and softer tail/running illumination. The lights come pre-wired for quick hookup, include rubber grommets and standard 3-prong plugs, and are rated to resist weather and road vibration.

How bright and visible are these 4-inch LED trailer lights?

The 24 LEDs in each 4-inch lens produce a high-contrast signal for stop and turn functions while offering lower-intensity running light output for tail illumination. The LED array is designed to stay distinct in daylight and dusk conditions without drawing excessive current.

• 24 LEDs per light for crisp stop/turn signaling
• Two brightness levels: high for stop/turn, low for tail
• Even lens distribution for wide viewing angles
• Sealed design prevents dimming from moisture or dust

Are these trailer lights simple to install on my 12V system?

Yes. Wiring uses three color-coded conductors and supports standard 3-prong plug connections included with the kit. The sealed, flush-mount housing fits common 4" cutouts and the rubber grommet helps keep the mounting point watertight.

• White = ground, red = stop/turn (high brightness)
• Black = tail/running (low brightness)
• Includes rubber grommet and 3-prong plug for each lamp
• Flush-mount style for tidy installation and protection

Will these lights hold up to weather, salt and road shocks?

The housings carry an IP65-style protection rating and are built with impact-resistant materials to resist dust, rain and light spray. Their sealed construction helps prevent corrosion and keeps the LEDs operating through wet conditions and routine vibration.

• IP65-level weather resistance against dust and water spray
• Sealed lens and housing to stop moisture ingress
• Impact-resistant build reduces damage from road debris
• Designed for salt-spray environments when rinsed and maintained

What vehicles and applications are these lights compatible with?

These 4" LED lights are made for any 12V DC application that accepts round flush-mount connectors: trailers, utility carts, RVs, trucks, buses, UTVs and marine trailers. Their compact size and universal wiring make them an easy retrofit or replacement option for many rear lighting needs.

• Works on trailers, trucks, RVs, buses, UTVs and boats (12V)
• Suitable as stop, turn and tail lights in a single unit
• Common replacement for 4" round recessed fixtures
• Pack of 12 helps service fleets or multiple mounting points

Who is this for? If you maintain trailers, run a small fleet, or need rugged replacement lights for towing and marine use, this Partsam 12-piece kit supplies multiple sealed, multi-function 4" LED lamps with plugs and grommets for fast installation. It’s best for owners seeking economical, weather-resistant rear signaling that’s simple to wire and sized for compact mounts, rather than for those who need specialized certified lighting for regulated commercial fleets.