Oyviny 4-Pin Trailer Wiring Harness for 2010–2017 GMC Terrain & Chevrolet Equinox — 4‑Flat Plug, 80" Lead

The Oyviny Custom 4-Pin 56094 trailer wiring harness installs a ready-to-plug 4-flat connector for 2010–2017 GMC Terrain and Chevrolet Equinox models, delivering reliable tail, brake, and turn signal wiring for towing.

This plug-and-play harness is made specifically to match the factory wiring on Terrain and Equinox vehicles from model years 2010 through 2017. It eliminates cutting or splicing by using OE-style connectors, durable materials, and a protective outer sleeve so you can attach a standard 4-way trailer plug quickly and with confidence. The kit is ideal for occasional towing, utility trailers, and basic light-duty hauling where a standard 4-flat connection is all you need.

How does this harness fit my 2010–2017 GMC Terrain or Chevrolet Equinox?

The harness is tailored to the factory sockets used on the listed Terrain and Equinox years, providing a direct fit into the vehicle’s existing trailer wiring receptacle. No wire cutting, splicing, or complicated re-routing is required—simply connect the OEM plugs and secure the harness along the frame or bumper.

• Model compatibility: GMC Terrain (2010–2017) and Chevrolet Equinox (2010–2017)
• Plug type: Standard 4-flat trailer connector
• Installation: Plug-and-play with factory-style connectors
• Length: 80 inches of lead for flexible routing

What electrical features and protection does the Oyviny harness include?

This wiring kit uses pure copper conductors and tin-plated brass terminals to maintain good conductivity and resist corrosion at connection points. The 4-pin connector is corrosion-resistant and includes a rubber dust cover; the harness itself is wrapped in a black nylon net tube for abrasion and weather protection.

• Conductors: Pure copper wire for efficient current flow
• Terminals: Tin-plated brass for corrosion resistance
• Connector: Corrosion-resistant 4-flat with dust cap
• Protection: Nylon net sleeve guards against chafe and moisture

How straightforward is installation, and what tools are needed?

Installation is designed to be fast and accessible for DIYers and professional techs alike. The harness arrives ready to plug into existing vehicle connectors, which eliminates cutting and splicing; basic tools are only needed to route and secure the wiring with zip ties or clips.

• Time: Typically under an hour for most installations
• Tools: Zip ties, screwdriver or trim tool for routing clips
• No cutting: Factory-style plugs avoid permanent wire modification
• Routing length: 80-inch harness provides routing flexibility

Who is this for: The Oyviny 4-Pin 56094 harness is aimed at owners of 2010–2017 GMC Terrain and Chevrolet Equinox who need a reliable, straightforward 4-flat trailer connector for light towing duties. It suits DIY installers, fleet vehicles that require a simple trailer light connection, and drivers who prefer a plug-and-play aftermarket solution that preserves the vehicle’s original wiring. If you need a heavier wiring solution for trailer brakes or 7-pin functions, consider a dedicated converter or 7-pin kit instead; for standard tail, brake, and turn light control, this harness provides a compact, corrosion-resistant, and easy-to-install option.