Try JLR Classic for the sensor number. I'm not sure which one would apply but it would either be 5 or 8 I should think. It looks like 5 has one pin and 8 might have 2.
That was another option that was available, along with missile launchers and smoke screens. I don't need the latter obviously as that's already built in as standard.
Fitted a new bit of tech today. Luckily as I don't have the heated front screen I even had a good location for the activation switch. Can't believe what a lucky coincidence it is that the switch is the identical size too.