Oyviny 4‑Pin to 7‑Way Trailer Adapter with Mounting Bracket, 16AWG Copper, 7" Lead & Dust Covers

If you tow trailers, campers, or utility equipment with mismatched connectors, this adapter gives you a clean, durable solution to bridge a 4-flat vehicle harness to a 7-way trailer plug. Built for plug-and-play use, it includes a mounting bracket and hardware so you can secure the adapter to your hitch or bumper and keep connections stable on the road.

How does this adapter handle everyday towing needs?

The Oyviny adapter provides the standard electrical paths trailers expect—tail, brake, turn signals, and auxiliary/ground—while protecting unused contacts with spring-loaded dust covers. The 7-inch lead length between connectors offers flexibility when lining up the vehicle and trailer, and the black wire loom keeps wiring tidy and shielded from chafing.

• 7-inch lead for flexible placement during hookup
• Spring-loaded dust covers on both ends to prevent dirt and moisture
• 16AWG copper conductors and tin-plated brass contacts for consistent conductivity
• Wire loom for strain relief and organized routing

Can I mount the adapter to my hitch or bumper easily?

Yes—Oyviny ships the adapter with a metal mounting bracket, six screws, and six nuts so you can fasten the connector securely. The bracket lets you position the adapter to reduce hanging weight and contact damage, and installing takes only basic hand tools.

• Includes metal bracket plus screws and nuts for secure attachment
• Multiple mounting points for adjusting height and angle
• Installation requires common hand tools and minimal time

What materials and wiring quality are used for longevity?

The connector housing is molded from heavy-duty plastic to resist impact and weather, while the electrical paths use 16AWG copper wire and tin-plated brass terminals to minimize resistance and corrosion. A protective black wire loom and robust contact covers help the adapter withstand typical road and marine exposure.

• Heavy-duty plastic housing for impact resistance
• 16AWG copper wires for reliable current flow to lights and accessories
• Tin-plated brass pins to reduce oxidation and improve contact life
• Wire loom adds abrasion protection and clean routing

Will this adapter work with common vehicle and trailer brands?

The Oyviny adapter follows standard pinouts used by many OEM tow packages, so it pairs with most factory 7-way plugs and is widely compatible with RVs, boats, ATVs, and light trailers. It’s suitable for use with popular truck and SUV brands that use 4-flat wiring on the vehicle side.

• Compatible with factory OEM 7-way plugs
• Works for RV, marine, ATV, and light trailer applications
• Fits common truck and SUV makes like Chevrolet, Ford, RAM, Toyota, and GMC

Who is this for: The Oyviny 4-to-7-way adapter with mounting bracket is designed for trailer owners, occasional tower drivers, RV enthusiasts, and fleet operators who need a dependable, easy-to-install wiring adapter to bridge a vehicle’s 4-flat connector to a 7-way blade trailer socket. It's also a practical spare for roadside repairs or seasonal conversions where a secure, protected electrical connection is required.