Genuine Land Rover Cruise control switch, this is the main on/off switch that goes onto the dashboard. This is the black one that is on the facelift models, for the pre-facelift models you need the grey switch.
Easily add cruise control to your Discovery, the wiring is already behind the blank switch and the ECU already has everything it needs in place to operate once you have installed this switch and the steering wheel controls.
Please call if you have any questions.