Nilight 4-Pin Trailer Wiring Harness for Toyota (55513) — Plug-and-Play 4‑Flat with Dust Cover

Nilight's 4-pin trailer wiring harness kit 55513 is a vehicle-specific, plug-and-play solution that adds a standard 4-flat connector to compatible Toyota trucks for reliable trailer lighting.

If you tow occasionally or regularly, a dedicated trailer wiring harness gives your truck proper tail light, brake, and turn-signal connections without cutting into factory wiring. The Nilight 55513 is built to fit specific Toyota models and years, plugs directly into OEM connectors, and stores neatly under the vehicle when not in use. It includes hardware and a rubber dust cover to keep the connector protected from the elements.

Which Toyota models and years does this harness support?

Nilight 55513 is designed for precise compatibility with older and newer Toyota trucks so you can install it without modifying factory wiring. Check your model and production year against the fit list before ordering to ensure a seamless fit.

• Fits 1993–1998 Toyota T100
• Fits 2005–2015 Toyota Tacoma
• Fits 2008–2012 Toyota Hilux
• OEM-style connectors match factory plug locations behind taillight housings and rear bumper

How easy is installation—do I need to cut factory wires?

The harness is plug-and-play so no wire cutting or splicing is required. It connects directly to the vehicle's existing trailer wiring plugs, making installation straightforward for DIYers or installers alike.

• Plugs into factory connectors behind driver and passenger-side taillights
• Includes zip ties and one screw for securing the harness and routing cables
• No electrical expertise required for standard installations

What functions does the 4-flat connector provide?

The standard 4-way flat connector handles essential trailer lighting signals so you can tow safely and legally. It stows under the bumper when not in use to stay out of the way and protected.

• Powers trailer tail/parking lights
• Provides brake light signal to trailer
• Transmits left and right turn signals
• Connector stores beneath vehicle near hitch after installation

How does Nilight protect the connector from weather and road debris?

The kit includes a snug rubber dust cover and uses durable components designed for automotive exposure, extending the usable life of the connector and maintaining dependable electrical contact.

• Rubber dust cover fits tightly over the 4-flat plug when not connected
• Weather-resistant connector housing built for exterior use
• Hardware included to mount and secure the harness away from heat and moving parts

This package includes one custom 4-pin trailer wiring harness, nine zip ties, and one screw for a complete installation. The kit is tailored for the listed Toyota models so you avoid generic harness fitment issues and get a neat, factory-like connection every time.

Who is this for: Drivers of compatible Toyota T100, Tacoma, or Hilux trucks who want a tidy, OEM-compatible trailer wiring solution without cutting factory wiring. It suits DIY enthusiasts, weekend haulers, and installers seeking a reliable, weather-protected 4-way connector for standard trailers.