Vehicle Fitment: The custom 4-pin trailer wiring harness fits for Toyota Sienna 2004 2005 2006 2007 2008 2009 2010, Replaces# 55580 Standard 4-Pin Connector: This trailer wiring harness kit provides a standard 4 pin connector for plugging in and towing a trailer, easy to connect trailer tail lights, brake signal lights and turn signals. And it also comes with all necessary wiring parts to support a reliable trailer wiring connection. Feature: Made of high-quality material with good corrosion resistance and oxidation resistance, this trailer wiring harness is equipped with rubber dust cover to keep the connection points clean, ensuring long-lasting performance. Easy Installation: Plug and play designed OEM connectors eliminate the need for cutting or splicing, just need to connect the power wire to your car battery. Vehicle Fitment: The custom 4-pin trailer wiring harness fits for Toyota Sienna 2004 2005 2006 2007 2008 2009 2010, Replaces# 55580