This electrical converter allows you to change a US 7-pin vehicle adapter to a European 13-pin plug. Plug and play design, minimizes the hassle of installing new wiring inside, no other adapters required. Includes dust cover on 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 in US vehicles. Wiring 7- US flat plugs on trailers with 13- European trailer wiring. Installation guide: a) Connect 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 RV blade socket in the vehicle. c) Insert the other side EU trailer plug into the socket converter. d) Check that all connections are properly secured. e) When in use, no maintenance of the electrical adapter is required. color: Black Material: ABS Contents: 1 x Trailer Light Converter Only the above content, others are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.