Finished passenger side today. Happy with the result.
Was able to mount the light without glueing it permanently. Instead I glued two additional holders that the light snaps into.
Also added bit of isolation tape to make sure that it won't rattle.
Disconnected the small one, so the small LED is off permanently.
I would not be able to use them anyway, since I want to fit Passat/Arteon mirror inserts. There was an option of anti-glaze mirrors on those cars and it will work in MK7 if you wire those inserts to the rear-view mirror.