This electric converter allows you to change a US style 7 way vehicle adapter to a European 13 pin plug. Plug and play design, minimize the hassle of installing new wiring inside, no other adapters required. Includes dust cover in the Euro trailer side with 13-pin plug to keep your plug clean when not in use. Converter with the function of separating the "stop" signal from the two wire system US vehicles. Wiring 7-way US flat connectors on trailers with 13-way European trailer wiring. Installation Guide: a) connecting the Converter to the vehicle, check that all signals on the car have been turned off. b) Connect the Converter to the existing US 7 way RV blade socket in the vehicle. c) Insert the other side EU trailer plug into the socket Converter. d) Check that all connections are safety fastened. e) When exploitation, maintenance of the electrical adapter is not required. colour:Black Material:ABS Package Contents: 1 x Trailer Light Converter Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.