Headlight Switch Bad? Or Worse...

[JayG]

Try cleaning the switch with contact or tuner cleaner
Remove the switch from the car
Squirt it in any and all holes you can find and down the shaft, don't worry if it drips out
move the switch quickly through all positions several times

shake out any liquid, it will evaporate fairly quickly anyway

If that does not fix the problem, replace the switch

Don't know what the scratchy sound is

[Bruich10]

Originally Posted by JayG

Try cleaning the switch with contact or tuner cleaner
Remove the switch from the car
Squirt it in any and all holes you can find and down the shaft, don't worry if it drips out
move the switch quickly through all positions several times

shake out any liquid, it will evaporate fairly quickly anyway

If that does not fix the problem, replace the switch

Don't know what the scratchy sound is

I did this little operation today - and it worked perfectly - thanks!
Loads and loads of contact spray everywhere - and plenty of switching forwards and backwards.
Mornings and evenings are getting dark - nice to have all lamps working again!