Lights

[mass199]

My 1990 front near side head lights are not working, dip or main.

Bulb replaced

fuses ok

Anything else i can try, all other lights on the vehicle are ok and all the earths seem ok

Help

Cheers Mark

[Budgie]

Side lights on the front & back on that side working OK?

[mass199]

Yes all working ok.  No power at the fuse box. Looks like it could be a problem after the switchgear and before the fuse box

Any ideas

[Budgie]

It's just a case of getting the wiring diagram and a tester and going through it until you find the problem.
Look to see what else is on the circuit, also look for any relays that power the lights as well. 

[ChrisW70]

Looks like it could be a problem after the switchgear and before the fuse box

Any ideas

It's quite common for the switches to breakdown on 200 Disco's - there's no relays in the loom so the power goes from battery via steering column switch to the headlamps - typically causes a bit of heat through the contacts after they become well worn and eventually breakdown of the switch.

Short term fix is a new switch, long term fix is a new switch and re-wire the existing feed to the back of the headlamps to switch relays and run a feed direct from battery to headlamp via the relay - this should make a marked difference in light output too.