Hi Blackburn - as you say the switch is clamped to the cable on the housing. But the housing appears to be fixed, or crimped onto the cable outer casing. There are two locating lugs on the underside of the switch which fits in the corresponding holes in the housing. I am not sure if the housing can be moved along the casing without causing any damage. The activating lug on the cable stops before the switch, i.e. on the bulk head side. This means the housing would have to move upwards about 1/4 inch.
I didn’t want to cut the outer casing if I can’t reconnect the housing to it higher up the cable.
Hope that makes sense.