CURT OEM Vehicle To Trailer Connector w/Harness 55774 - The Home Depot
Amazon.com: Oyviny USCAR to RV 7 Way Trailer Plug Adapter USCAR Twist Lock 7 Way Plug for GM Model Chevy Silverado Trailer Plug OEM Style(USCAR Socket and Factory Tow Package Required) :
CURT Vehicle Side Custom USCAR Vehicle Trailer Wiring Harness for Towing, 4-Pin Trailer Wiring 55384 - The Home Depot