OK so the cable came in the post and I have had my first try at coding.
After a few false starts I got everything up and running. There were 2 things I wanted to code this evening, activate the trunk button to close (as well as open) and the Start-Stop memory function.
Start-stop worked (no more having to press the button to deactivate each time
)
Didnt manage to get the trunk close working though, will try again tomorrow.
All in all pretty easy when you have the PDF guides that are available. If anyone else is trying or wants to try feel free to PM me with any questions (not that I'm an expert by an means!).