I have a hybrid vehicle that uses a "type 2" charging cable, but the cable is too short. It plugs in to a regular 13Amp UK socket in my garage. The problem is that, in addition to the usual 3 twin and earth cores, the cable also has 2 smaller cores which I believe are used for some charger control / diagnostics.
The plug it was attached to looks like an ordinary UK moulded socket but I can't get into it to see how it is wired.
Can anyone help ? Here are the relevant pics: