OPP ULITE 4.5M 7 Core Trailer Extension Cable with Trailer Plug Socket Connector Towing Caravan Truck Electrical Wiring Cable Connector Spiral Trailer Line for European Car Signal Audio (TC1001-7 Pin) : Amazon.co.uk:
Extension cable for trailer 7 poles 5 m
Maypole 8-Core 13-Pin Trailer Extension Lead - 3 Metres - Towsure UK