I replaced the rear defogger switch with a nos one I bought. I had to figure out how to remove it from the housing.
Notice the holes. Need to get a pick or small screwdriver and press near the top of the hole. There is a clip that is holding it in and you need to compress the clip to remove. On a 73 Camaro, there are 3 clips to do this on. When it comes time to install, simply press the clip back in until it catches. Also notice the prong with the silver ring – it shows you how to orient things when putting back in.