CURT Powered Multi-Function Taillight Converter (56236). This is for a 4-way flat trailer connector. It can be used for a multitude of vehicles - do a Google search to see if it will work with your vehicle. These typically sell for $70 or more. Brand new, never opened. See photos for package details. Do your homework, no returns/refunds! Cash only.
(CURT Wiring Kit typically required to complete installation (55152). Can be ordered or purchased from a local U-Haul dealer. This is 20' of wire and fuse adapter that runs from the vehicle battery to the taillight converter. About $20.)