CZC AUTO 12V Submersible Rectangular Trailer Light Kit — Low-Profile 2-Pack, DOT-Compliant Waterproof

CZC AUTO 12V submersible rectangular LED trailer light kit provides bright, DOT-compliant tail/stop/turn and running lights built to stay watertight for marine and road towing use.

This compact kit includes two low-profile combination lights, a license plate bracket, stainless mounting hardware, and a 25 ft four-pin wire harness upgraded to 18 AWG 100% copper for improved waterproof connections. Each lamp is engineered for continual exposure to wet environments and designed to replace factory trailer lenses on boats, utility trailers, and towing rigs.

How durable are these lights when used in marine or wet conditions?

The lights are constructed for repeated submersion and include sealed housings and corrosion-resistant stainless steel fasteners. CZC AUTO tested the lamps by immersing them multiple times for prolonged periods; they continued functioning afterward when correctly installed and wired.

• Waterproof, submersible housing tested over multiple immersion cycles
• Stainless steel hardware resists rust in saltwater and freshwater
• 18 AWG 100% copper wire harness for reliable, low-resistance connections

Will these LEDs be bright enough for road and trailer safety?

Yes — the left lamp contains 22 diodes (including four dedicated LEDs for license plate illumination) while the right has 18 diodes, delivering clear stop, turn and running signals. The LEDs are high-output and engineered to meet DOT visibility expectations when mounted at the recommended vehicle height and angle.

• High-density LED arrays for strong stop/turn and running visibility
• Separate diodes for license plate illumination included on left unit
• Rectangular low-profile shape improves mounting versatility and sightlines

How simple is installation and what is included in the kit?

Installation is straightforward for anyone comfortable with basic trailer wiring. The kit ships with both lights, a license plate bracket, mounting hardware, and a pre-assembled 25 ft four-pin harness so you can reach most standard trailer setups without splicing.

• Two combination lights (tail/stop/turn/running), license plate bracket, mounting hardware
• 25 ft, four-pin harness prewired with upgraded 18 AWG copper conductors
• Hardware sized for common trailer thicknesses; basic wiring tools required for connection

What maintenance or precautions should I follow to keep them waterproof?

Good sealing and proper wiring are essential for long-term submersion performance. Ensure connectors are tight, wires have no exposed conductors, and mounting bolts are properly torqued to compress seals evenly.

• Double-check wire polarity and secure connectors before submerging
• Inspect seals and mounting hardware periodically for damage or loosening
• Avoid cutting or nicking the harness; replace damaged sections with waterproof-rated parts

Who is this for: This CZC AUTO LED trailer light kit suits boat owners, marine trailer operators, fishermen, contractors, and anyone towing in wet or corrosive conditions who wants durable, low-profile lighting. It’s ideal for replacing worn factory lights on utility trailers, boat trailers, campers, and work trucks where a compact, waterproof tail/stop/turn/running lamp is required. If you need DOT-style visibility plus a license plate light and a ready-to-install 25 ft harness, this kit offers a practical, weatherproof solution with stainless hardware and improved copper wiring for lasting performance.