Dan. My wood was replaced a while ago in my W126 and I could only find the Burlwood facia that had 2 extra cutouts in it ( and oh boy, was it expensive ! ) Find 2 extra switches from you scrap yard and these can be used to ' plug ' the holes. They have to be fitted before you fit the facia to the car as they clip in from the back of the panel. I had to buy a recirc. switch last year as I could not find one at the breakers and that was $85
so get them from the yard and clean them up !