CZC AUTO 12V LED Submersible Trailer Lights — Rectangular Low-Profile Pair with 25ft 4‑Pin Harness and Stainless Mounts

These CZC AUTO 12V low-profile rectangular LED lights are a waterproof, submersible tail/stop/turn and running light kit designed for boat trailers, trucks and marine towing that includes a 25ft 4-pin harness and mounting hardware.

Built to survive wet conditions and harsh towing environments, this kit combines compact stainless-steel-mounted housings with high-output LEDs and an upgraded 18AWG 100% copper wire harness for reliable electrical connection. The pair of lights meet DOT-style signaling functions and include a license plate illumination feature on the left lamp. They are intended for straightforward retrofit or new installations on trailers, boats, and similar vehicles that need a low-profile, waterproof lighting solution.

How well do these lights resist water and submersion?

The CZC AUTO lights are designed and tested for underwater use: samples were submerged repeatedly for multi-hour cycles with successful operation. The housing and seals are engineered to prevent water ingress when installed correctly and with proper wiring connections.

• Tested underwater multiple times for hours-long cycles
• Sealed housings with corrosion-resistant hardware
• Recommended correct wiring and no shorts before submersion

What functions does each light provide and how bright are they?

Each unit combines running, stop and turn signal functions in one compact rectangular housing; the left lamp also includes four dedicated diodes for license plate illumination. The LED arrays use multiple diodes for strong visibility consistent with DOT-style signaling requirements.

• Left lamp: 22 diodes, includes license plate light
• Right lamp: 18 diodes for clear stop/turn/running output
• High-brightness LEDs for improved visibility over incandescent bulbs

What is included and how easy is installation?

The kit ships with two rectangular submersible lights, a stainless-steel license plate bracket, mounting hardware and a 25-foot 4-pin wire harness built from 18-gauge 100% copper wire. Installation is typical for trailer lights: mount the housings, connect the 4-pin harness to vehicle wiring, and secure the plate bracket.

• Complete kit: 2 lights, license plate bracket, mounting hardware
• 25ft 4-pin harness for flexible routing to tow vehicle
• Stainless steel hardware minimizes rust on marine trailers

What are the physical dimensions and compatibility notes?

Each rectangular lamp measures approximately 8" long by 2-3/4" wide by 3" high, providing a low-profile footprint that fits many trailer mounting points. They are intended for use on trailers, boats, and trucks where DOT-style tail/stop/turn/running lights are required; confirm your trailer wiring is compatible with a 4-pin harness.

• Size per light: 8" x 2-3/4" x 3" (length x width x height)
• Stainless steel fasteners included for secure mounting
• Designed for 12V systems with standard 4-pin trailer connectors

Who is this for: This CZC AUTO kit is aimed at boat owners, trailer builders and anyone who needs a robust, low-profile LED lighting solution that resists water and submersion. Choose this kit when you want durable marine-grade hardware, bright multi-function LEDs, and a long 25ft harness for flexible installation on trailers, utility rigs, and towing vehicles.