Retrofit an auto dimm rearview mirror
i would like to upgrade my current mirror to an auto dimm.
As far as i know there was no this kind of optional extra for c4.
I made a small research and i found maybe the D2 A8 rear view mirror would be fit for the C4.
As the attached image can be see there is a metal console to attach to the ceiling of the car thats why i don't know if it is the best solution for it.
Any suggest(please no aftermarket idea)



