I'm still training..
And i have succeed to remove the roof center.
I took photos i can share...
I have been surprised to see 2 "modules"

, on one we can see "Webasso Drive assy" and the other "Nidec Valeo"
Someone could explain me what the aim of this 2 modules are ...
About the BT retrofit, someone could confirm me i need to route the wire behind the head airbag of the A pillar as the picture shows above...
Thanks in advance..