Oyviny 7-Pin Round to 7-Pin RV Trailer Adapter — 14-inch Lead with Mounting Bracket, Weather-Resistant Plug-and-Play

The Oyviny 7-pin round to 7-pin RV blade adapter converts a vehicle's round 7-way socket to a trailer-standard 7-way blade connector with a 14-inch lead and included mounting bracket.

When you need a quick, reliable way to link a tow vehicle that uses a round 7-pin output to a trailer wired for the flat 7-pin blade, this adapter provides a plug-and-play solution. Built with weather-resistant materials, a dust-cover, and a nylon wire loom, the assembly focuses on durability and straightforward installation so you can connect lights and power without rewiring.

How will this adapter simplify connecting my vehicle to a trailer?

The adapter lets you mate a vehicle-side round 7-pin socket to a trailer-side flat 7-pin blade plug without changing either connector. It saves time and avoids permanent modifications by acting as a reversible interface between the two connector types.

• Direct plug-and-play design—no soldering or splicing required.
• 14-inch cable length for flexible positioning near the hitch.
• Includes mounting bracket and hardware for secure attachment.
• Spring-loaded dust cover protects unused terminals from moisture.

Will this work with my vehicle’s lighting and brake setup?

This adapter supports vehicles where brake lights are combined with turn signals (combined stop/turn circuits). It does not suit vehicles or tractors that use separate brake circuits or certain commercial setups without pin mapping adjustments.

• Designed for standard 7-way trailer lighting where stop and turn share a circuit.
• Not compatible with semi-tractor separate brake/light wiring without modification.
• Recommended: use a trailer light tester to confirm pin functions before towing.
• Some installations may require swapping a couple of pins to match vehicle wiring.

What materials and protection features are included to handle weather and wear?

The adapter housing and connections are molded to resist moisture and mechanical stress, while the wiring bundle is shielded by a black nylon loom to prevent abrasion. A spring-loaded cap covers the round connector when it's not in use to keep contaminants out.

• Molded 7-way plug for robust, weather-resistant contact protection.
• Nylon wire loom bundles and shields wires against chafing and road debris.
• Spring-loaded dust cover prevents corrosion on unused pins.
• 14" lead gives flex for routing and reduces strain at connections.

How easy is installation and what comes in the box?

Installation is straightforward: plug the round end into the vehicle, plug the blade end into the trailer, and use the included bracket and fasteners to mount the adapter near your hitch. No additional parts are required for most tow setups.

• Plug-and-play connectors for fast hookup in seconds.
• Included mounting bracket and installation hardware for secure placement.
• 14-inch lead for tidy routing and enough slack to prevent tension.
• Instructions: verify pin functions with a tester before first use.

Who is this for: The Oyviny 7-pin round-to-blade adapter is ideal for drivers who tow trailers, campers, or utility trailers where the tow vehicle uses a round 7-way plug and the trailer expects a flat 7-pin blade. It fits owners who want a non-permanent, weather-resistant connection with included mounting hardware and an easy-install, serviceable design. If your vehicle uses separate brake circuits or is a semi-tractor, check wiring compatibility or consult an electrician before purchasing.