mirror indicator

Hi, New here, been a serial lurker for a while and thought i would jump in and register as my enthusiasm level is 10/10 and mechanical skills are -10/10! i have my S W220 3.2 CDi, owned her for nearly 7 years. Shes done 120k miles Daily driver with the usual faults of air suspension, air...

I have a 2007 CLS and I need to replace the indicator strip in the driver's door mirror (RH). I have had a poke around but can't see a way to get the cover off to remove the indicator. Does the back cover come off without having to remove the glass, motor etc?

The wing mirror indicator lens on my lovely 2008 C180 Kompressor is broken and needs replacing. Can anyone help?

After removing the mirror glass and motor from a 2006 C Class Coupe, I am at a loss as to the next step in order to gain access to the screws which secure the indicator lens in place. I would appreciate some advice. Please see attachment for inside of the mirror.