Oyviny 4-Pin Trailer Wiring Harness for 2010–2017 GMC Terrain & Chevy Equinox — 4-Way Flat, 80in Cable, Plug-and-Play

Oyviny's 4-pin 56094 trailer wiring harness adds a ready-to-plug 4-way flat connector to 2010–2017 GMC Terrain and Chevrolet Equinox vehicles for reliable trailer light and turn signal connections.

If you tow small trailers, bike racks, or cargo carriers with a 2010–2017 GMC Terrain or Chevrolet Equinox, this aftermarket wiring harness gives you a factory-style 4-flat socket without cutting or splicing your vehicle wiring. The kit is pre-wired with corrosion-resistant materials, a protective dust cap, and a nylon sleeve to guard against abrasion and weather. It’s designed for an easy install into existing plugs and includes ample cable length to reach common hitch locations.

How does this harness connect to my Terrain or Equinox?

The Oyviny harness is engineered to plug directly into the vehicle’s OEM trailer wiring connector—no wire cutting, splicing, or special tools required. That preserves factory wiring integrity and speeds installation.

• Direct-fit 4-pin connector matching factory sockets.
• Pre-terminated plugs for a simple plug-and-play hookup.
• 80-inch cable length to comfortably reach hitch areas.

What materials and protections keep the wiring reliable?

Durable components resist corrosion and road wear: pure copper conductors for efficient electrical flow, tin-plated brass terminals to limit oxidation, and a rubber dust cover to shield the socket when idle. The harness is sleeved in a black nylon net tube to protect against abrasion and environmental damage.

• Pure copper wires for strong conductivity.
• Tin-plated brass terminals to reduce corrosion risk.
• Rubber dust cap helps keep moisture and dirt out of the socket.
• Nylon net sleeve protects against chafing and UV exposure.

Which trailer functions will this 4-way connector support?

This standard 4-flat connector carries the essential trailer lighting circuits: running lights, brake lights, and left/right turn signals. It’s compatible with a wide range of small trailers, light-duty utility carriers, and lighting adapters that accept a 4-pin flat plug.

• Tail/running lights for visibility at night.
• Brake light signal to warn following drivers.
• Left and right turn signals synchronized with vehicle indicators.
• Compatible with most small trailers, bike racks, and cargo carriers.

Will installation affect my vehicle warranty or electronics?

Because the kit is designed to plug into existing connectors without cutting or splicing, it minimizes risk to factory wiring and electronics. Still, consult your vehicle’s service manual or dealer if you have warranty concerns before installing aftermarket parts.

• Plug-and-play design avoids permanent wire modifications.
• No soldering or splice connectors required for most installations.
• Simple removal restores original vehicle configuration.

Who is this for: The Oyviny Custom 4-Pin 56094 wiring harness is intended for owners of 2010–2017 GMC Terrain or Chevrolet Equinox models who need a durable, easy-to-install 4-way trailer connector for small trailers, bike racks, or cargo carriers. It suits DIY installers who prefer a no-splice solution and drivers who want corrosion-resistant components and extra cable length for flexible mounting. If you tow occasionally and want a straightforward, reliable way to connect lights and signals without modifying factory wiring, this harness offers a practical option.