Terminate car 6 cable as normal (T568B) (blue to pin 4, blue/white to pin 5) and use this lead (1M Cat 6 Router cable BT Infinity VDSL RJ11 / RJ45 High speed Broadband, Gaming | eBay - https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F323090180495) from the...