fouwick 12V LED Trailer Light Kit — IP67 Submersible Tail & Marker Lights with 25ft UV-Protected Harness, DOT-Certified

fouwick's 12V LED trailer light kit is a DOT-certified, IP67 submersible tail and marker lighting system with a 25‑foot UV-protected harness for reliable stop, turn, tail, and license illumination on boats, trailers, and utility vehicles.

If you tow boats, ATVs, snowmobiles, or utility trailers, dependable lighting is essential for safety and legal compliance. This kit combines bright, long-lasting LEDs with marine-grade sealing and a longer-than-average harness so you can mount lights on bigger trailers and still keep wiring protected from sun, salt, and abrasion. The package includes everything needed for a quick stud-mount installation and uses proven materials to resist corrosion and road impact.

How bright and road-legal are these lights?

These fouwick LEDs are designed to satisfy DOT FMVSS 108 requirements while delivering significantly more visible output than halogen units. Their high-output diodes produce crisp, glare-free signals for stop, turn, tail, and side marker functions so other drivers can see you clearly in adverse conditions.

• DOT certified for legal on-road use.
• Up to 5× the brightness of standard halogen bulbs.
• Crisp, glare-minimized illumination for clear signaling.
• Works effectively in rain, fog, and nighttime driving.

Will these lights survive launch and saltwater exposure?

The housings and internal electronics are sealed to an IP67 rating, so they withstand temporary submersion and resist saltwater intrusion. Sonic welding and a screwless lens design prevent moisture entry and diode corrosion, making the kit suitable for marine trailers and frequent launches.

• IP67 submersible sealing protects internal circuitry.
• Sonic-welded, screwless lens for a fully waterproof envelope.
• Corrosion-resistant components reduce maintenance needs.
• Suitable for boat, jet ski, and other watercraft trailers.

How does the wiring harness handle longer trailers and harsh sun exposure?

fouwick supplies a 25‑foot heavy-duty harness—longer than typical kits—to reach lights on extended trailers without splicing. The jacket is UV-coated and abrasion-resistant to slow aging from sun exposure and protect against chafing and corrosion.

• 25ft length accommodates longer trailer layouts.
• UV-protected outer jacket resists sun damage.
• Color-coded, split Y design simplifies connections.
• Standard 4-pin flat connector for stable, flicker-free performance.

How simple is installation and what hardware is included?

The kit is built for a fast, do-it-yourself setup with stud-mount lights and a clear wiring diagram. All stainless steel mounting hardware and a rust-proof license plate bracket are included to ensure a durable, maintenance-free fit without last-minute trips to the hardware store.

• Complete kit includes lights, harness, hardware, and bracket.
• Stud-mounted design for secure, straightforward installation.
• Step-by-step wiring diagram provided for under-30-minute install.
• High-impact ABS housings resist cracking and fading.

Who is this for? If you own or tow a trailer, boat, RV, snowmobile carrier, or utility trailer under 80 inches wide and need a robust, marine-ready lighting solution, this kit fits the bill. It appeals to owners who want DOT-compliant brightness, dependable submersibility for launches, and a longer, UV-protected harness for neat routing on extended trailers. DIY-minded users will appreciate the included hardware and clear instructions; fleet managers and weekend boaters will value the corrosion resistance and long-term reliability.