Partsam Slim Square LED Trailer Light Submersible 15R/4W LEDs Low-Profile IP67 Stop/Turn/Tail

Partsam slim square LED trailer lights are waterproof, submersible stop/turn/tail and license lights with 15 red and 4 white 5050 SMD LEDs designed for trailers under 80".

These compact, low-profile trailer lamps combine five lighting functions into a single sealed unit built for wet and marine environments. The PMMA lens and ABS housing protect a sealed circuit board so the LEDs continue to perform after exposure to water, making them well suited for boat trailers and other vehicles that may be submerged or frequently washed. Each lamp uses a 3-wire hookup (ground, low-bright tail, and high-bright stop/turn) and includes screws and gaskets for straightforward mounting.

How does the Partsam light perform when submerged or exposed to water?

The housing and PCB are sealed to an IP67 standard, so brief immersion and heavy spray won’t compromise the LEDs or circuitry. This reduces corrosion and failure risk compared with unsealed lamps, especially in saltwater or road-salt conditions. Still, correct wiring and secure seals are important for long-term reliability.

• IP67-level sealed circuit board for water resistance.
• PMMA lens resists yellowing and cracking from UV and water.
• ABS housing withstands impact, salt spray, and frequent washdown.
• Includes gaskets and screws for watertight mounting.

What lighting functions are included and how do they wire up?

Each slim square unit handles five functions: stop/brake, tail/running, turn signal, side clearance, and license plate illumination. The lamp uses a 3-wire system: white is ground, brown supplies low-bright tail/clearance/license lighting, and yellow/green supplies high-bright stop/turn signals. That wiring keeps installation simple while maintaining distinct brightness levels for different functions.

• 15 red 5050 SMD LEDs for tail, stop, turn, and side marker roles.
• 4 white 5050 SMD LEDs dedicated to license plate lighting.
• White = ground, brown = low-bright, yellow/green = high-bright.
• Works with standard 12V trailer wiring systems.

How compact and versatile is this lamp for different trailer types?

The slim square profile keeps the light low-profile and less likely to snag on racks or gear while still offering strong visibility. It's marketed for trailers under 80 inches but also fits many trucks, tractors, buses, and specialty vehicles where a recessed or compact lamp is preferred. Check mounting location and wiring compatibility before installation.

• Slim square design minimizes protrusion and snag risk.
• Suitable for boat trailers, utility trailers, dump trucks, and more.
• Includes mounting hardware for straightforward replacement installs.
• Compact footprint works well in tight or recessed mounting spots.

What should I consider for installation and maintenance?

Installation requires basic 3-wire trailer wiring knowledge and attention to seal placement to preserve the IP67 protection. Test all connections before submerging the trailer and insulate splices with marine-grade connectors or heat-shrink for best results. Routine visual checks of gaskets and fastenings extend service life.

• Test wiring on the bench before final mounting.
• Use marine-grade connectors or sealed butt-splices for durability.
• Confirm gasket seating and tighten screws evenly to maintain seal.
• Inspect periodically for physical damage or loose fasteners.

Who is this for? The Partsam slim square LED tail lights are aimed at owners of boat trailers and smaller utility trailers who need a low-profile, waterproof lighting solution. They also suit fleet operators and DIYers who want a compact, sealed light for trailers, trucks, or specialty equipment exposed to wet conditions. If you need clear stop/turn/tail functions plus license illumination in a rugged, submersible package, these lights are a practical, easy-to-install option.