VASTAUTO 7-Foot 7-Pin Trailer Wiring Harness Extension – 7-Way RV Socket, OEM-Grade Plug-and-Play

The VASTAUTO 56070 is a 7-foot, 7-pin trailer wiring harness extension that adds a second RV-style 7-way socket to your truck for towing lights, brakes, and auxiliary power.

This harness extension plugs into your vehicle’s existing 7-way tow connector to give you an additional factory-style socket mounted in the truck bed. Built with OEM-grade materials and tested to meet or exceed original equipment standards, it’s designed to keep trailer lighting, electric brakes, backup lights, turn signals and auxiliary circuits connected without cutting or splicing into factory wiring.

How does this harness extension install and fit my truck?

Installation is straightforward: it’s a plug-and-play extension that connects to the truck’s current 7-way RV blade socket and mounts in the bed using a 2-1/8-inch hole. No wire cutting or splicing is required, so the factory wiring remains intact and reversible. Check your vehicle model and the listed interchangeable part numbers to confirm fit.

• Simple plug-and-play connection to existing 7-way plug
• Requires 2-1/8-inch hole saw for mounting
• No splicing — preserves factory wiring and warranty-friendly
• Fits many Chevy, Dodge, Ford, GMC, Nissan, Ram and Toyota models (verify compatibility)

What circuits and trailer functions does the VASTAUTO 56070 support?

This extension preserves the full set of 7-pin RV blade functions: tail lights, brake lights, left and right turn signals, reverse/back-up lights, electric trailer brakes and auxiliary 12V power. It simply duplicates the truck’s existing 7-way output so you can mount the socket where it’s most convenient for your trailer hookup.

• Tail, brake, and turn signal circuits retained
• Backup light circuit supported for camera or reverse lamps
• Electric trailer brake circuit included
• Auxiliary 12V power pin for trailer accessories or charging

Is this harness durable and backed by warranty?

The VASTAUTO harness is made from high-quality materials and tested to meet or exceed OEM quality standards, giving durable service in towing conditions. It ships with a 12-month warranty and a hassle-free return/refund policy to protect your purchase if there are manufacturing issues.

• Constructed with OEM-grade components and connectors
• Designed for corrosion and vibration resistance in automotive use
• 12-month warranty with straightforward return/refund options
• Replaces part numbers 56070, 57008, and 56000 when compatible

Which vehicles will this 7-foot extension service?

The extension is intended for specific models from major manufacturers including Chevy, Dodge, Ford, GMC, Nissan, Ram and Toyota. Because towing connectors can vary, always verify vehicle model year and cross-check interchange numbers before ordering to ensure a correct fit.

• Designed for select Chevy, Dodge, Ford, GMC, Nissan, Ram and Toyota trucks
• Compare your vehicle’s tow socket and part numbers to ensure compatibility
• Replaces common OEM part numbers listed for direct interchange
• 7-foot cable length provides flexible placement in the truck bed

Who is this for: The VASTAUTO 56070 7-foot 7-pin extension is ideal for pickup owners who want a second factory-style 7-way socket mounted in the truck bed for easier trailer hookups, fleet operators needing reversible, non-invasive wiring solutions, and DIYers who prefer a plug-and-play installation that preserves factory wiring. Confirm vehicle compatibility and enjoy an OEM-quality extension covered by a 12-month warranty.