Partsam 4" Round LED Stop/Turn/Tail & Backup Light Kit — 4 Red + 2 White, 12-LED Waterproof Flange Mount

This all-in-one lighting set replaces multiple incandescent fixtures with sealed, hardwired LED modules built for 12V DC systems. Each 4-inch round unit houses 12 super-bright diodes and installs through a recessed flange mount for a clean fit on trailers, motorhomes, utility vehicles and more. The package includes four red lenses for stop, tail and turn signals plus two clear lenses for reverse/back-up and fog illumination.

How do these lights improve visibility and reliability?

The LED design delivers faster illumination and higher perceived brightness than traditional bulbs, which helps other drivers notice braking and direction changes sooner. Because each lamp is sealed and impact-resistant, they resist moisture and vibration that commonly degrade incandescent assemblies.

• 12 high-efficiency LEDs per light for bright, consistent output
• Waterproof, sealed construction to prevent corrosion and fogging
• Impact-resistant housing reduces damage from road shock
• Lower power draw and less heat than filament bulbs

What wiring and mounting steps are required for installation?

These units are hardwired with a three-conductor pigtail: black for ground, red for brake/stop, and white for tail/running light. The flange mount is recessed, so you drill a 3.8-inch internal or 4.2-inch external hole in the mounting surface and secure the lamp in place for a tidy, secure fit.

• Hardwired 3-wire pigtail: black (negative), red (brake/stop), white (tail/running)
• Drill opening: 3.8" internal / 4.2" external for correct recess fit
• Flange mount ensures flush, vibration-resistant attachment
• Simple splice or butt-connector wiring to existing 12V circuits

Which functions does each lamp support and how many come in the kit?

The kit supplies six 4-inch round lamps: four with red lenses for stop, tail, turn and parking functions, and two with clear lenses for reverse/back-up and fog illumination. Each lamp carries 12 LEDs and is rated for 12V DC systems commonly found on trailers and recreational vehicles.

• 4 red 4" round lights for brake, tail, turn and parking use
• 2 clear 4" round lights for reverse/back-up and fog lighting
• Universal 12V compatibility: trailers, RVs, trucks, boats, and more
• Sealed, multi-function design replaces multiple separate fixtures

Who is this for? Installers, fleet owners and DIY vehicle owners who need a durable, low-maintenance lighting upgrade will value this kit. It’s designed for anyone fitting or replacing 4" round trailer or vehicle lights on semi trailers, utility trailers, horse floats, motorhomes, pickup trucks, UTVs, boats and commercial vans. If you want a sealed, bright, energy-efficient solution that mounts flush and handles road vibration and wet conditions, this Partsam set is a practical choice.