110 defender headlights problems

Whilst driving round fields last night headlights stopped working (not fuses blown) side lights work and high beam work when i flash them using indicator stalk but when i turn headlights on ALL lights go out?? Any ideas please (earth strap is ok on chassis)

Knackered headlight switch.

Remove the switch and take a close look at it and you will see the contacts have sunken into the plastic after the plastic melted

ratty said:

Knackered headlight switch.

Remove the switch and take a close look at it and you will see the contacts have sunken into the plastic after the plastic melted

Click to expand...

Many thanks for that you were spot on! I've fixed the monkey spanker!

ratty said:

Knackered headlight switch.

Remove the switch and take a close look at it and you will see the contacts have sunken into the plastic after the plastic melted

Click to expand...

I have the same issue on my 1993 Defender 110 200 Tdi. My main beams will not come on. And when selecting high beam they don't work either. I know the bulbs work and the wiring is good since I can flash the high beams and the head lamps flash. I checked all the 7.5amp fuses and they're good. I took my voltmeter and determined that I don't have power getting to the fuses for the RH/LH Low or RH/LH high beams with or without the engine running. I confirmed that I do have power getting to fuses for the other accessories. I also confirmed that I have power to the six riveted contacts on the main beam switch. So, I have power at the switch, but not at the fuse box.

I also confirmed that previously the relay that many have mentioned on this forum was removed and replaced with basically a look alike that simply acts to connect two Blue/Red wires together. It also appears that these wires are the same wires that go to my fuse box for the high/low beams.

At this point, I really need some help. Any advice?