I've searched and found nothing. In the process of trying to remove it, I have successfully broken off a chunk of glass which is still attached to the mirror. Not really a huge deal because I have someone coming over to replace the windshield, but now I need to disconnect the piece that is apparently glued to the glass. I saw where someone said "turn it 45 degrees" to remove it. Well, that's how I broke the chunk of glass off, prying and twisting.