MECMO 56083 4-Way Trailer Wiring Harness for 2020-2024 Toyota Highlander & Lexus RX (RX350/RX450h/RX350L) – Factory Tow Package Required

Overview

Meet MECMO 56083, a 4‑way trailer wiring harness designed for select Toyota and Lexus models that include a factory tow package. This harness helps power your trailer tail lights, brake lights, and turn signals with a clean, plug‑and‑play installation that fits typical towing setups.

Designed for precise compatibility, this model targets 2020–2024 Toyota Highlander (with factory tow package) and Lexus models including RX350, RX450h, and RX350L (also with factory tow package). The focus is on reliability and ease of use, with attention to how the harness integrates with your vehicle's OEM wiring.

Compatibility and verification

Before you order, confirm you have the right setup. The Highlander requires a black square Tail Light Signal Control Module as part of the factory tow package. For Lexus, a factory tow package is also required. To verify, contact your dealer with the VIN, or inspect under the driver's side bumper for a pre‑wired connector port designed for a trailer harness.

• Highlander (2020-2024): factory tow package required; look for the module referenced above.
• Lexus RX series (2010-2023) including RX350, RX450h, and RX350L (2018-2022): factory tow package required.

Plug-and-play use and benefits

This T‑connector harness is engineered for a straightforward, no‑drill connection to the OEM trailer light wiring. When installed, it adds power to the trailer tail, brake, and turn signals, expanding your towing options without altering the vehicle core electrical system.

• Directly plugs into OEM trailer light wiring for a clean install.
• Supports multiple signals (tail, brake, turn) to keep your trailer visible and predictable on the road.

Durability and protection

The harness includes a rubber dust cover that seals the socket against dust and moisture, helping maintain connection reliability in varied weather and road conditions. The assembly is designed with vehicle‑side wiring that resists wear during repeated hitching and unhitching.

Important note: this harness is intended for Highlander and Lexus RX vehicles with the factory tow package only. If your vehicle is not equipped accordingly, consider exploring other MECMO options designed for your configuration.