Pulling off the door trim just a little bit more you will be able to the the electric connector. I pulled the connector out of the door, and then disconnected the connector by first pull up the red latch and then pushing in a black latch, which was hidden under the red latch. Now here is the thing: I did remove the nut holding the mirror before, and as soon as I disconnected the connector the mirror smashed down onto the concrete - but I was lucky: Nothing damaged! This is why you remove the nut