This electrical adapter 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 the plug clean when not in use. Adapter with the function of separating the \"stop\" signal from the two-wire system found in US vehicles. Wiring 7- US flat connectors on trailers with 13- European trailer coupling. Installation guide: a) Connect the adapter to the vehicle, check that all signals on the car are off. b) Connect the adapter to the existing US 7 RV blade connector in the vehicle. c) Insert the other side EU trailer plug into the adapter plug. d) Check that all connections are securely fastened. e) When in use, no maintenance of the electrical adapter is required. Color: Black Material: ABS Contents: 1 x Trailer Light Adapter 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.