what does this swich do........

[muddymud]

i have a disco 1, next to the electric wing mirror switch there is another switch, when i turn it there is a motor noise coming from behind the left hand headlight but cant see what is going on!

[Frankie-Boy]

Its most likely headlamp levellers, there should be one each side.

[muddymud]

i thought that but the headlight beam doesn't seem to move and the noise is only behind the left hand light?

Cheers

[Disco Matt]

It could be that the right hand one is dead for some reason. The easiest way to check: Remove the headlight unit (as you would when changing the bulb), one of the things it clips onto at the bottom has a vaguely cylindrical thing behind it. A rod should move in and out at the front of this to adjust the headlight when you move the switch.

[ChrisW70]

I agree with the diagnosis already given, does the switch look like this -

If so the two objects behind it are the motors - there will be one behind each headlight and it sounds like they're either stuffed or not connected correctly.