The numbers on the following images indicate the order in which you click on the switches. The number 1 being the first switch followed by 2 then 3 etc. .
The images are in the starting position for each puzzle.

On the top right of each puzzle there are white dots. These indicate if a switch is open or closed.
A dot with an “x” indicates the switch is closed, no “x” means the switch is open.
It is possible for a switch puzzle to be rotated so if you see a configuration not listed it may be rotated.

Cheat Sheet

Thank you to -aRTY- on reddit for making the cheat sheet and allowing us to post it here.

5 Switch Puzzle

4 Switch with Gears Puzzle

Switch with Doors Puzzle