Was on the 2011. I have not
Done the touchscreen remote in the rear centre armrest as I can’t find one anywhere. Well, could find the remote, just not the docking station unless I bought a whole in ...
I was lucky, picked up everything I needed from a breaker for a good price. I managed to get around removing the headlining by using a set of cable pulling rods to feed the wires to the roof console , ...
Retro fit is doable but not just plug and play. There is a really good write up on the disco3 forum where he fitted a rss setup in his disco (just google “disco 3 Rse retro fit”).