CURT Trailer Tail Light Converter Kit 4-Way Flat, Blue — Weather-Resistant, Potted Multi-Function 4-Pin Harness

The CURT 59236 is a weather-resistant, potted multi-function converter that converts 2-wire, 3-wire or PWM stop/taillight systems into a standard 4-way flat trailer output for reliable trailer lighting.

This compact converter is engineered to keep trailer wiring working in wet, salty, and vibration-prone environments. Housed in a thick, potted enclosure and built with surface mount technology (SMT) plus a microcontroller, the unit reduces heat, resists moisture and impact, and senses overloads for safer operation. The kit includes color-coded pigtail wires, a 4-way flat dust cover, powered converter wiring, and snap-locks for secure splicing — all sized to fit neatly on most tow vehicles or trailers.

How does this converter protect wiring in harsh weather?

The CURT 59236 uses a potted enclosure filled with a solid compound that seals internal electronics from moisture, dust, and road salts. That rigid shell also cushions components against vibration and shocks during towing.

• Watertight, potting-filled housing prevents corrosion and shorts.
• Durable outer shell resists road grime and salt spray.
• Designed for exterior mounting without losing performance.

Will it work with different vehicle lighting systems?

Yes — the converter accepts 2-wire, 3-wire, or PWM combined stop/taillight inputs and converts them to a standard two-wire 4-way flat output compatible with most trailers. Color-coded pigtails and a clear wiring guide simplify splicing and connection.

• Converts multiple input systems into a universal 4-way flat output.
• Includes color-coded wires for easier, faster splicing.
• Comes with snap locks and a wiring guide to reduce installation errors.

What electronic features improve durability and safety?

CURT built this converter with SMT circuitry and a microcontroller to lower resistance, reduce heat, and lengthen component life. The microcontroller monitors current to respond quickly to overloads or short circuits, and the unit filters unwanted input signals for stable performance.

• SMT components for lower resistance and longer lifespan.
• Microcontroller senses current and protects against overloads.
• Input filtering reduces false triggers from noisy signals.

How easy is installation and what accessories are included?

Installation is straightforward: splice the pigtail wires into your vehicle wiring, attach the 4-way flat output to your trailer lead, and secure connections with the included snap-locks. The kit also provides a dust cover to protect the 4-way connector when not in use.

• Includes powered converter wiring kit and four snap-locks.
• Dust cover protects connector from dirt when idle.
• Compact 9 x 3 x 6-inch size fits most mounting locations.

Who is this for: The CURT 59236 is aimed at owners of trucks, SUVs, or vehicles that tow trailers and need a weatherproof, dependable way to convert diverse taillight systems to a standard 4-way output. It's a strong choice for people who tow frequently in wet or salty conditions, anyone upgrading older wiring, and technicians who want an easy-to-install, long-lasting converter that minimizes electrical faults.