rear view mirror windshield GLUE!!

originals were not glued they were laminated with the same vinyl that goes in between the 2 piece windshields. When we repaired them and had to re-do them out in public we had similar kits that just glued it on. the trick was clean,clean clean the windshield and the button (you can't see it but there is a lot of garbage stuck on that metal button) scrape it,wire wheel it or just sand it off, BTW make sure its on the small side that goes towards the windshield. after 30 years of working cutting with and bending Chrysler glass..... I've done it backwards and had to replace the complete windshield, luckily not on my dime and it only happened once. but the trick was to clean it and then make sure you don't touch either the button face or the area it goes on in the windshield (I taped a square around the area on the outside of the windshield to make sure I go the whole thing clean and didn't lose location)