Hi Nick,
It did work and I can test it again pre-sending away.
The two plugs that connect it are very easy to access from the boot by undoing 1 plastic screw and lifting the liner. So I can easily plug it in there to test again (2 min job).
The centre console is a bit more work but still not difficult, I managed it with no previous experience yesterday within an hour just watching a couple of YouTube videos. There is literally 10 screws at most. You need a torx size 30 and 10, a Philips screwdriver and an 8mm socket.
An interior trim tool or some kind of lever is also useful so you can gently pry up the trim pieces without snapping the holds. Although they can be glued on if you do break any, I managed not to though!