[Clan]

If your car is a 2004 model year you have the wrong kit . The trailer module is for 2005 models which are different .
That grey plug in your boot with about 12 connections is where the trailer socket plugs into the car . They are not that expensive from the dealer and you only need Fog Light Application software loaded if you want your car foglights to go out when towing a caravan to prevent the red light being reflected back at you off the white caravan ...