wiper switch nut

There is a special nut for that. You will hear to use a screwdriver etc, but you will risk damaging the plastic bezel. Google Mopar bezel nut tool
Late 60's Ford trucks, Mustangs, and Corvettes and Camaros use these as well. Not sure how interchangeable they are, but I have two of them now (thought I had lost one, ordered a replacement, then found the first one), and after using it I wish I had bought one a LONG time ago.