WM 974319 Removing and installing wire harness for rear-view mirror: Information
WARNING: This page is about a different car, the 2016 Porsche Macan and 2015 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.
The steps for removing and installing the wire harness for the rear-view mirror are described under "Removing and installing mirror base". → 669319 REMOVING AND INSTALLING MIRROR BASE