Partsam 4" Round LED Trailer Lights Kit — 4 Red + 2 White, 12-LED Flange Mount, Waterproof

This compact kit combines four red 4-inch round lights and two white 4-inch reverse/fog lights, engineered to replace incandescent fixtures with brighter, lower-current LEDs. Each light is sealed for waterproof performance, fitted for recessed flange mounting and hardwired with three pigtail wires for straightforward installation on DC 12V vehicles. The design prioritizes impact resistance, fast LED response and compatibility across trailers, trucks, RVs and many other applications.

How do these lights perform compared with traditional incandescent trailer lamps?

LEDs in this kit switch on faster, run cooler and draw significantly less current than incandescent bulbs while delivering higher perceived brightness. The sealed lens and durable housing reduce the risk of water or shock damage that commonly affects filament bulbs.

• 12 super diodes per lamp for uniform illumination
• Lower amperage load for reduced wiring strain and longer battery life
• Faster illumination for clearer signaling to other drivers
• Waterproof, impact-resistant construction for harsh environments

What wiring and mounting steps are required for installation?

Each lamp is hardwired with three pigtail wires: black for negative, red for brake/stop, and white for tail/running light. The lights seat into a recessed flange mount, and require a 3.8" internal or 4.2" external hole for fitment.

• Drill or verify a 3.8" internal / 4.2" external mounting hole
• Connect black to chassis ground, red to brake/stop circuit, white to tail/running circuit
• Seal connections with heat-shrink or marine-grade connectors for waterproofing
• Verify 12V system compatibility before finalizing installation

Which vehicle types and uses are these round LED lights suited for?

The kit is made for universal 12V use on a variety of vehicles and trailers where stop, tail, turn and reverse lighting is needed. Its compact 4-inch profile is ideal when space is limited but reliable, multi-function lighting is required.

• Utility trailers, flatbeds, horse trailers and hauling trailers
• Semi trucks, service trucks, buses and motorhomes
• Pickup trucks, UTVs, parade floats and specialty vehicles
• Marine applications provided proper wiring corrosion protection

How durable and weather-resistant are these LED tail lights?

Each unit is sealed and impact-resistant to withstand road vibration, moisture and common shock exposures. The watertight housing and lens protect LEDs and internal connections, making them suitable for exterior mounting in varied weather conditions.

• Watertight sealed body to prevent moisture intrusion
• Impact-resistant lens and housing for rough-road durability
• Low-heat operation reduces thermal stress on internal parts
• Hardwired pigtails minimize connector failure points when sealed properly

Who is this for? Installers, fleet owners and DIY vehicle owners who want a compact, multi-function LED solution that replaces incandescent trailer lamps with a more reliable, energy-efficient option will find this kit useful. It suits anyone needing brighter signaling and reverse lighting in a 4-inch recessed flange format—especially when durability and waterproofing are priorities. This Partsam set is particularly practical for commercial trailers, RV owners and anyone upgrading older lighting systems to modern LEDs without modifying vehicle wiring systems drastically.