Hopkins 42475 Plug-In Simple Vehicle Wiring Kit T-Connectors allow you to connect your trailer's wiring system into your vehicle's wiring system Prewired to provide right turn, left turn, taillight and on some models, the backup function The two-piece system provides for a more versatile installation as well as a simple plug replacement option if the unit ever becomes damaged Simple 4 easy step installation, No cutting, soldering, or taping Please note: this unit installs behind right rear interior panel