Just as an update I’ve tapped into a 24v pin - I can’t find a 12v pin as the fan connector does not exist on my board.
However I cannot seem to get the switches to work. They are NO and whilst the light turns on when close to a metal object the machine seems to think the switch is on at all times. Suggesting there might be some leakage through the switch. This leads me to believe that I need to find a 12v pin to test.