I would like to ADD the Rear power sunshade option to my B8.5 RS5. I have searched and searched but cant seem to find a conclusive answer on if it can be done with parts or if its something more complex like running a wire for the switch under the MMI or something. I suppose it could easily be added by changing the switch, rear speaker tray and shade motor assembly. Of course then coding also. But, has anyone done it?

Thanks for the help!