Anyone recognise this switch ???

Hello all, before I put the gearbox back on (new clutch fork) I'm curious as to where this switch goes to. About a year and a half ago I changed the clutch and afterwards up pops the diff warning light and the speedo stoped working. From what I can tell they're connected somehow and I just assumed that a cable was pinched last time the bellhousing was put together. One of the wires goes to the handbrake the other two (black and I can't tell the other wire) form a switch but I can't tell where it's supposed to connect to

Any ideas ?

Al

vehicle?year?

Yes it would help I suppose, It's a 1998 Discovery (S reg) 300. The wires are black and green (I reckon there are two shades on one of them light green and dark green). Any ideas?

Cheers
Al