Oyviny Multi-Tow Adapter — USCAR 7-Pin to 7-Way Blade & 4-Way Flat, Dual-Output, Plug-and-Play

The Oyviny Multi-Tow adapter converts a factory USCAR 7-pin tow socket into both a 7-way blade and a 4-way flat connector so you can tow different trailers without rewiring.

When your truck came with a factory USCAR 7-way socket, many trailers still use the more common 7-way blade or 4-way flat plugs. The Oyviny Multi-Tow adapter plugs into the original USCAR receptacle and provides two ready-to-use outputs, so you can hook up utility trailers, boat trailers, or RVs without cutting into your vehicle wiring. It installs without soldering or splices and ships with a mounting bracket and hardware for a neat, secure setup.

How does this adapter fit my vehicle?

This adapter is built specifically for vehicles equipped with a factory USCAR 7-pin tow socket—commonly found on many Ford, GM, and Dodge models. Before buying, inspect the connector behind your hitch to confirm it’s the USCAR style; the adapter is not universal for non-USCAR sockets. Installation is plug-and-play: simply insert into the factory receptacle and fasten the included bracket.

• Compatible with Ford, GM, and Dodge vehicles that have a USCAR 7-pin factory tow socket
• No cutting or splicing required—plugs directly into the factory connector
• Includes a mounting bracket and hardware for secure installation

What electrical functions does the adapter support?

The Oyviny adapter routes full trailer lighting and auxiliary circuits through both outputs. You can power taillights, brake lights, turn signals, reverse lights, trailer brakes, and a 12V auxiliary line depending on the trailer’s plug. Internally, pure copper conductors provide stable current transfer for reliable signaling under load.

• Supports lighting, turn signals, brake controller feed, reverse light, and 12V auxiliary
• Pure copper wiring for consistent conductivity and minimal voltage drop
• Protective wire loom reduces abrasion and organizes the harness

How durable and weatherproof is the connector?

Oyviny designed the housing from impact-resistant ABS plastic to resist rust and retain appearance over time. Each output has a rubber dust cover to keep moisture and debris away from the pins, reducing corrosion risk. The heavy-duty wire loom and robust connector shells make this adapter suitable for frequent towing and outdoor exposure.

• ABS plastic body resists rust and exterior wear
• Rubber dust covers protect both 7-way and 4-way sockets from dirt and water
• Outer loom protects wires from road abrasion and extends longevity

Why choose a dual-output adapter instead of swapping plugs?

A dual-output adapter saves time and keeps your vehicle wiring intact while letting you tow multiple trailer types. Rather than changing trailers’ plugs or adding permanent wiring changes, this adapter provides both connector styles simultaneously. It’s a convenient, reversible solution that preserves factory harness integrity.

• Use two different trailers without altering factory wiring
• Quick swap between trailers—no tools or re-wiring needed
• Maintains vehicle resale value by avoiding permanent modifications

Who is this for: The Oyviny Multi-Tow adapter is ideal for truck owners with a factory USCAR 7-pin tow socket who frequently tow various trailer types—boat owners, weekend DIY haulers, or fleet vehicles that switch trailers often. If your vehicle is a Ford, GM, or Dodge with the USCAR receptacle and you want a tidy, durable, plug-and-play solution to connect both 7-way blade and 4-way flat trailers, this adapter provides a fast, non-invasive answer.