Streetwize Extension Lead Convertor 13 To 7 Designed for connecting the lighting and electrics from your vehicle to the lighting board on your caravan or trailer. It is a legal requirement when towing to ensure your brake & indicator lights are clearly visible to other road users. This adaptor is suitable for connecting vehicles with twin electrics, which include 12N electrics that provide the legal lighting (brake, indicator & fog) and 12S electrics that provide supplementary electrics (reverse lights, interior lights, appliances) * For vehicles with twin electrics (12N/12S) * Comes with attached lids on the 7-pin plugs * Also suitable for bike racks. Due to geographical locations we are unable to deliver to: Isle of Wight, Isle of Man and Ireland.