Heater controls

[lancyman]

Hi all

Just looking under the steering wheel at the heating controls.
I have found a wire with a clip hanging off. Maybe an earth cable?
It has a screw and white plastic clip, with two wires going into it.
Any idea what it is, and what it should be screwed too?

Thanks.

[lancyman]

Found it. It was just in lipped from the side pannel.
Still don't know why heating is blowing cold till 30 degrees
Though.