Oyviny 4-Pin Flat Trailer Wiring Harness — 5 ft Female Connector, 18AWG Pure Copper PVC Jacket

Oyviny’s Vehicle-Side 4-Pin Flat Trailer Wiring Harness is a 5-foot, heavy-duty 4-way female connector with 18AWG pure copper conductors and a PVC jacket for reliable trailer lighting connections.

Whether replacing a worn trailer socket or wiring a new towing setup, this Oyviny 4-pin female trailer connector delivers a standard-fit, color-coded solution built for durability and simple installation. The 60-inch cable gives flexibility for routing while the rubber dust cover and ergonomic grip tabs make daily use easier and help protect the connection from debris and moisture.

What vehicle and trailer systems does this 4-pin socket work with?

This female 4-way flat socket follows the industry-standard 4-pin wiring format, so it fits most passenger vehicles, trucks, and utility trailers that use a basic lighting harness. It handles tail, brake, and turn signal circuits, plus running lights when paired with matching trailer wiring.

• Standard 4-way flat format compatible with common trailer plugs
• Connects tail lights, brake lights, turn signals and running lights
• Ideal for utility trailers, small boat trailers, campers and light-duty towing

How easy is installation and which tools are typically required?

Installation is straightforward thanks to the color-coded 18AWG wires that match common wiring conventions. Basic hand tools—wire strippers, crimpers or butt connectors, and electrical tape or heat shrink—are usually sufficient for a secure connection.

• Color-coded wires simplify matching vehicle harness colors
• Tabs on the socket provide better grip during plug/unplug
• 5-foot length gives room to route and secure wiring to the vehicle frame

What features help this connector withstand outdoor conditions?

Oyviny designed the plug with longevity in mind: pure copper 18AWG conductors for good conductivity, a thick PVC jacket to protect against abrasion, and a rubber dust cover to block dirt and moisture when not connected. The heavy-duty plastic housing resists everyday road wear.

• 18 AWG pure copper wires for consistent electrical performance
• PVC jacket shields wires from chafing and weather exposure
• Rubber dust cover keeps moisture and debris out of the socket

How can I tell this socket is durable and user-friendly?

The connector combines rugged materials with ergonomic details: a robust plastic body to resist impacts, an easy-grip design for quick hookups, and a length suitable for clean, secure routing. These features reduce maintenance and make everyday towing tasks quicker.

• Ergonomic side tabs for easier plug handling and reduced strain
• Heavy-duty construction for long service life under normal towing use
• Ample cable length for flexible mounting and strain relief options

Who is this for? This Oyviny 4-pin female trailer wiring harness is aimed at DIYers, fleet managers, and vehicle owners who need a reliable, standard 4-way connection for trailers, light-duty towing, or replacement vehicle-side sockets. It’s particularly suited to anyone who wants a straightforward, durable, and easy-to-install connector that matches common trailer wiring standards without complicated electronics or adapters.