KT 1.5M PRE-WIRED LED 7-PIN LARGE ROUND TRAILER SOCKET KT 1.5m Pre-Wired Trailer Sockets offer an easy and efficient installation solution. Unique and incomparable to other pre-wired ranges on the market the KT Pre-Wired sockets have a patented design complete with 1.5m of quality 7-core trailer cable. 1.5M 7 Core Trailer Cable (7/.30 4amps) Sheath Thickness 0.6mm Temperature Rating 90C Salt Water Resistant. Made From Strong ABS Plastic. Tested To Australian Standards. LED Inbuilt Circuit Tester.