Difficulty in removing the old switch

The old switch was hard to remove. Thinking that I may have to loosen the wires I used a socket wrench to remove a clamp. This was unnecessary. In the end the switch did come out using a large size screwdriver. The problem was that the expanding plastic tongue is not visible from the ouside so you have to try to feel your way around. If i had ordered the replacement before and not afterwards I would have seen this before hand.