Draper 12V Socket Conversion Adaptor 7 Pin N Type to 13 Euro

Amazon

Fits existing 7-pin N-type socket, for trailer and caravans to be connected using 13-pin euro plug Conversion adaptor suitable for European standard trailers Made from hard plastic suitable for road and weather conditions Suitable for 12V exterior lighting Meets European standards - E11, Weight: 0.1543235834 pounds, Manufacturer: Draper

Electrical World

Adaptor plugs into towing vehicle's 7-pin N-type socket to allow connection of a caravan or trailer with a 13-pin Euro plug.