MECMO 4-Pin Coiled Trailer Extension Cable — 5ft (60in) PU Jacket, 18 AWG Copper

MECMO's 5-foot coiled 4-pin flat trailer extension is a plug-and-play male-to-female wiring adapter designed to extend your trailer lights quickly and keep excess cable tidy while towing.

When connecting a towing vehicle to a trailer, reliable lighting continuity matters for safety and legal compliance. This MECMO 60-inch (stretchable to 5ft) 4-wire flat extension uses a coiled design and durable materials to bridge gaps between mismatched plugs or to give extra slack without creating a trailing hazard. It’s suitable for common trailer types including boat, ATV, motorcycle, horse and cargo trailers that use the industry-standard 4-way flat connector.

How does the coiled design reduce cable drag and tangles?

The spiral, retractable cable stays compact when not stretched, keeping the wiring off the road and out of harm’s way. When you need more length the cord extends smoothly and then bounces back to its compact shape, reducing snagging and wear.

• Coiled construction stretches up to 5 feet and retracts to a compact length.
• PU outer jacket resists abrasion and keeps the coil flexible.
• Prevents dragging or wrapping around trailer tongues during turns.

Will this adapter fit my vehicle and trailer’s 4-way flat sockets?

Yes — the MECMO extension uses standard 4-pin flat male and female connectors that plug directly into most vehicle and trailer 4-way flat sockets. No cutting, splicing, or tools are required; the cable provides a direct, reversible connection between mating plugs.

• Includes both vehicle-side male and trailer-side female 4-way flat plugs.
• Compatible with common 4-pin lighting systems (tail, stop, turn, ground).
• Plug-and-play design keeps original wiring intact for easy removal.

What materials and construction ensure long-term reliability?

MECMO built this extender from a soft yet durable PU outer cover with 18 AWG pure copper conductors inside for consistent electrical contact and flexibility. The materials resist deformation, staying pliable in cold and recovering shape after stretching.

• 18 AWG pure copper wires for stable conductivity and minimal voltage loss.
• Soft PU jacket protects against abrasion, moisture, and flex fatigue.
• Secure molded connector housings to reduce connector stress and exposure.

How much extra length can I expect in everyday towing use?

While the cord’s maximum stretch is approximately 60 inches (5 feet), practical comfortable stretches commonly fall between 3 and 4 feet depending on mounting positions. That range gives enough slack for turns and hitch movement without leaving long loose cable trailing behind your trailer.

• Maximum extended length: about 60 inches (5 ft).
• Most comfortable working length: 3–4 feet for safe maneuvering.
• Retracts after use to reduce storage bulk and prevent drag.

Who is this for: The MECMO 4-pin coiled wiring extension is aimed at recreational and light commercial trailer owners who need a robust, no-fuss way to add a little extra length between a tow vehicle and trailer. It’s ideal for boat owners, ATV and motorcycle trailering, small cargo haulers, and anyone who wants a compact, durable adapter that preserves factory wiring and reduces cable drag during towing.