CZC AUTO Submersible 12V LED Trailer Light Kit — Under 80 in, DOT‑Compliant Sealed Lights

CZC AUTO's 12V submersible LED trailer light kit delivers DOT-compliant stop, turn, tail, marker, reflector and license-plate illumination designed for trailers up to 80 inches wide.

This kit combines fully sealed marine-grade housings, a pure-copper 18 AWG harness and all-LED diodes to provide bright, reliable lighting for boat trailers, utility trailers, snowmobile trailers and other narrow towing rigs. Built for repeated submersion, the lights use sonic-welded seams and marine-grade glue at potential leak points to resist water intrusion, while meeting DOT FMVSS108 standards for visibility. The package includes left and right multi-function tail lights, a wiring harness and a diagram to simplify installation.

How does this kit perform when submerged or exposed to wet conditions?

The lights are engineered for underwater use with sealed housings and reinforced entry points for wiring, so they withstand repeated submersion and splash conditions. CZC AUTO applies sonic welding and marine-grade adhesives at edges and wire entrances to maintain a watertight barrier.

• Fully sealed lens and housing with sonic-welded seams for leak resistance
• Marine-grade glue applied to wiring entry points and lens edges
• DOT FMVSS108 certification ensures legal visibility standards
• All diodes are LEDs—no incandescent bulbs to fail when wet

What light functions are included and how visible are they?

Each left and right tail light provides seven functions: stop, turn, tail, rear reflector, side reflector, side marker and license plate illumination. The LED diodes deliver high photometric output for better daytime and nighttime visibility compared with incandescent units.

• Seven integrated functions per lamp for full trailer signaling
• High-visibility LED diodes for clearer stop and turn signals
• Rear and side reflectors built into the assembly enhance passive safety
• Pre-shipment photometric inspection ensures consistent brightness

How straightforward is installation and what wiring is included?

Installation is designed to be simple for common trailer setups: the kit ships with an 18-gauge copper wire harness and a clear wiring diagram. Ensure correct connections and verify no shorts before submersion; the manufacturer provides instructions and support to guide you through wiring and mounting.

• 18 AWG 100% copper wiring for reliable conductivity and corrosion resistance
• Wiring diagram included with the kit for quick reference
• Instructions highlight testing for shorts before underwater operation
• Customer support available for troubleshooting and guidance

What protections, warranty and certifications come with the lights?

CZC AUTO inspects every unit before shipment and backs the lights with a clear return and warranty policy. The lights comply with DOT FMVSS108 visibility requirements and undergo photometric testing to confirm performance.

• DOT FMVSS108 compliance for street-legal trailer lighting
• 100% quality inspection, including photometric checks prior to shipping
• 30-day money-back guarantee and 12-month warranty on quality issues
• Responsive customer service with 24-hour support for issues

Who this kit is for: this CZC AUTO 12V submersible LED trailer light kit is ideal for owners of boat trailers, utility trailers, snowmobile trailers and other towing rigs under 80 inches wide who need dependable, DOT-compliant lighting for wet or marine environments. It's well suited to DIY installers and professional shops that require marine-grade sealing, bright LED visibility and clear installation guidance backed by a warranty.