Mine are currently Dimming Mirrors as well
I just Rang Blackburn Audi and said they dont have any Retro Fits or even have the option for it on the system
I asked for the Base Unit (as suggested above)
and he said does it currently have them on ...
said no
and he said he cant order them .. system dont have it on etc...
probably but then you need to ascertain which wire does what, then id imagine a curve ball such as irregular voltages and unwanted error codes knowing these cars......best to source the button
grader...thats weird cos they supplied me with the part numbers only recently, cant imagine they'd have done that to tell me they cant supply