Oyviny USCAR 7-Pin Trailer Wiring Adapter, 7-Way Blade & 4-Way Flat, Plug-and-Play with Bracket

Oyviny Multi-Tow adapter converts a factory USCAR 7-way socket into both a 7-way blade and a 4-way flat trailer connection for flexible towing. This compact, plug-and-play adapter is built for vehicles equipped with a factory USCAR 7-pin tow socket and provides both a 7-way RV blade plug and a 4-way flat connector so you can tow different trailers without rewiring. Designed to fit many Ford, GM, and Dodge models that use the USCAR standard, the Oyviny adapter replaces the factory plug and supplies standard trailer circuits — taillights, turn signals, brake lights, reverse lights, trailer brakes and auxiliary power — while keeping the factory harness intact.

Will this adapter fit my truck’s factory tow package?

The adapter is made specifically for vehicles with a USCAR 7-pin factory tow socket. Before purchasing, visually inspect the connector behind your bumper to confirm it matches the USCAR 7-pin shape; it won’t fit non-USCAR or older round-style sockets.

• Compatible with many Ford, GM, and Dodge vehicles that ship with a USCAR 7-way socket.
• Replaces the factory USCAR plug—no changes to the vehicle harness required.
• Not compatible with non-USCAR 7-pin or round 7-pin trailers.

How easy is installation and what hardware is included?

Installation is a simple plug-and-play swap: unplug the factory USCAR connector and insert the Oyviny adapter into the vehicle socket. No cutting, splicing, or professional wiring is required, and a mounting bracket with hardware is included so you can secure the adapter under the bumper or on a hitch.

• Plug directly into the vehicle’s USCAR 7-way socket—no tools for wiring.
• Includes mounting bracket and screws for a tidy, secure installation.
• Rubber dust covers keep unused connectors protected from moisture and dirt.

What materials and protections does the adapter offer?

The adapter housing uses durable ABS plastic to resist rust and maintain appearance, while a heavy-duty wire loom protects the bundled pure copper conductors for reliable electrical performance. Rubber dust caps cover both the 7-way and 4-way sockets to prevent corrosion when connectors aren’t in use.

• ABS plastic body for weather resistance and long service life.
• Pure copper wiring for stable conductivity and minimal voltage loss.
• Protective wire loom and rubber dust covers for enhanced durability.

Can I use both connectors at once and what functions are supported?

The adapter provides both a 7-way blade and a 4-way flat so you can connect the appropriate trailer plug without modifying either vehicle or trailer. It carries standard trailer circuits: lighting, turn signals, brakes, reverse, and auxiliary power depending on the trailer wiring configuration.

• Dual outputs let you switch trailers quickly between 7-way and 4-way plugs.
• Supports taillights, turn signals, brake lights, reverse lights and auxiliary circuits.
• Intended for typical towing needs; check trailer wiring for advanced options.

Who is this for: This Oyviny Multi-Tow USCAR adapter is for owners of Ford, GM or Dodge trucks that came with a USCAR 7-pin factory tow socket and who tow different trailers with 7-way blade or 4-way flat plugs. It’s particularly useful for drivers who want a no-hassle, durable solution to swap quickly between trailers without cutting into factory wiring, and for anyone who prefers a tidy, weather-protected connector that mounts securely under the bumper.

FAQ

Q: Does this adapter require cutting my truck’s wiring?

A: No. It plugs directly into the factory USCAR 7-way socket—no splicing or cutting needed.

Q: Will it power trailer brakes and reverse lights?

A: Yes. It carries standard circuits for brake, reverse, turn signals and auxiliary power when supported by the vehicle.