FITMENT: This 4 way flat vehicle-trailer connector is designed for 2015 - 2020 Toyota Sienna (excluding Toyota Sienna SE). OEM-compatible connectors to plug into the taillight assembly. STANDARD OUTPUT: Standard 4-pin connector adds versatile towing options to your Toyota Sienna. Connect the 4-pole trailer lighting wire harness at the back of your vehicle to power trailer tail lights, brake signal lights and turn signals. EASY INSTALLATION: No cutting or splicing factory wire. Plug and play harness, prewired trailer wire connector plugs directly into Sienna’s existing wiring, which located behind tail lights. Unplug the connection and insert the plug in T-connector connector into the vehicle's harness. DUST COVER: 4-way flat trailer connector comes with tight-fitting rubber dust cover to protect the socket terminal from dust and water damage. DURABLE CONSTRUCTION: This for Toyota Sienna trailer hitch wiring harness construct with 18 Gauge heavy duty bonded wire and premium tin-plated copper terminals perform in great corrosion-resistant and conductivity. MECMO 56261 Towing Solution for 2015 - 2020 Toyota Sienna (NOT For SE). It is a plug-in simple vehicle to trailer wiring harness Utilizes OEM Connectors For Enhanced Fit And Weatherproofing, includes vehicle side 4 flat for your 2015 2016 2017 2018 2019 2020 Toyota Sienna tow a light-heavy trailer. Simply plug in this trailer lighting wire kit featuring exact OEM matching connectors for a perfect weather-tight fit. This kit provides a power converter that reduces the load on the vehicles lights and provides brighter lights on the trailer. Required accessories are included to get you towing faster.