Oyviny 4-Way Coiled Trailer Extension Cable 5 ft Stretchable — 18AWG PU-Sheathed Weather-Resistant

Oyviny's 5-foot coiled 4-way trailer extension is a plug-and-play male/female wiring harness that stretches for turns, stays compact when not in use, and protects connections with a PU-sheathed cable and dust cover.

This compact extension cable gives you a reliable 4-pin connection between vehicle and trailer without splicing or bulky slack. Built with 18 AWG wires, tin-plated terminals, and a weather-resistant PU sheath, the harness is intended for any trailer system using a standard 4-way plug — including boat, horse, and utility trailers. The coiled design keeps the cable tidy while allowing extra reach for tight turns and offset hitches.

How does this coiled extension improve trailer maneuvering?

The coil stretches during turns so the cable doesn't drag on the ground or get pinched between vehicle and trailer. After a turn it springs back toward the tow vehicle, reducing risk of snags and road wear. This flexibility helps maintain clean, consistent lighting and signal connections while towing.

• 5-foot coiled length extends when needed and retracts when idle
• Reduces cable dragging and tangling on tight turns
• Maintains neat cable routing behind the hitch

Will this work with my existing 4-way trailer plug?

Yes — the Oyviny extension uses a standard 4-pin male and female connector designed to mate directly with industry-standard 4-way sockets. It’s ready to use out of the box, no cutting or splicing required. Side tabs on the connectors improve grip when plugging or unplugging in wet or cold conditions.

• Standard 4-pin male/female pair for universal compatibility
• Tabs on connectors for easier handling and secure fit
• Rubber dust cover keeps mating surfaces clean when disconnected

How durable and weatherproof is the wiring?

The cable combines 18 AWG fully jacketed copper wires, tin-plated brass terminals, and a high-temperature-resistant PU outer sheath for abrasion and weather resistance. That construction resists moisture, road grime, and temperature variation better than unprotected cables. The included rubber dust cover also helps keep corrosion off the connector pins when not in use.

• Pure copper conductors for consistent electrical performance
• Tin-plated brass terminals resist corrosion and improve conductivity
• PU sheath withstands wear, UV exposure, and temperature swings

What length should I expect and how stretchy is it?

The coiled harness is designed with a 5-foot (60-inch) maximum stretch; in normal use the working length is typically about 40 inches when connected. The spring-back coil preserves cable memory so it remains compact when not stretched. Confirm your required reach before purchase if you need greater than the designed expansion.

• Designed stretch length: 5 feet (60 inches)
• Typical working length around 40 inches under normal towing geometry
• Coil keeps cable compact and reduces excess slack

Who is this for: This Oyviny 4-way coiled extension is made for drivers who tow small to medium trailers and want a tidy, durable, plug-and-play wiring solution. It’s a practical choice for boat owners, horse trailer operators, landscapers, and anyone using a standard 4-pin trailer connection who needs extra reach during turns without running long loose cable. Choose this harness if you need reliable lighting signals, corrosion protection at the connector, and a compact cable that resists dragging.