Oyviny 4-Pin to 7-Way Trailer Adapter with Mounting Bracket, 7-inch Lead — 16AWG Copper, Dust Covers

The Oyviny 4-pin to 7-way round blade trailer adapter converts a vehicle's 4-way flat outlet into a full 7-way blade socket, complete with mounting bracket and dust covers for protected, reliable towing connections.

If your tow vehicle has a 4-way flat connector but your trailer or accessory requires a 7-way blade feed, this Oyviny adapter bridges the gap without rewiring the vehicle. Built with 16 AWG copper conductors, tin-plated brass terminals and a durable molded housing, it provides a tidy, weather-resistant link between factory tow packages and trailers, RVs, boats, or utility equipment.

How does the adapter make towing wiring simpler?

The adapter eliminates the need to install a new socket on the tow vehicle by converting the existing 4-way flat plug into a standard 7-way blade receptacle. It routes the essential circuits—tail, brake, turn signals, reverse and auxiliary—through a single compact interface for plug-and-play use.

• Converts 4-way flat vehicle side to 7-way blade trailer side
• Pre-wired 16 AWG copper leads for immediate connection
• 7" lead between connectors gives flexible mounting options

What protects the connector from weather and road debris?

Both ends include spring-loaded dust covers to keep moisture, dirt and corrosion out when not connected. The molded housing plus a black wire loom around the 4-pin conductors helps shield wiring from abrasion and extends service life in outdoor environments.

• Spring-loaded dust caps on both 4-way and 7-way ends
• Molded plastic shell resists impact and UV exposure
• Wire loom organizes and safeguards bundled conductors

How easy is the adapter to install and mount?

Installation is straightforward: the kit includes a mounting bracket and fasteners so you can secure the adapter near the hitch or bumper. No vehicle rewiring is required—simply plug the 4-way flat into the vehicle, mount the bracket, and attach the 7-way socket where the trailer plug can reach.

• Includes mounting bracket, six screws and six nuts
• No soldering or vehicle modification for most installs
• 7" harness length allows flexible socket positioning

Will this work with my vehicle or trailer?

The Oyviny adapter is designed to mate with standard factory 4-way flat outputs and OEM 7-way blade trailers, covering a wide range of makes and models. It works well for boats, RVs, ATVs and common truck brands that use the standard connector types.

• Compatible with most OEM 4-way flat and 7-way blade systems
• Suitable for marine, RV, trailer, and utility towing applications
• Commonly used with Chevrolet, Ford, Dodge/RAM, Toyota, GMC and others

Who is this for: This adapter is ideal for vehicle owners who need a quick, durable way to add a 7-way blade socket without altering factory wiring—perfect for occasional tow users, rental rigs, DIY trailer owners, and small fleet operators who want a neat, protected connection point mounted near the hitch.