Fog Light Problem

[Mease]

Hello All
My 92 Audi 80's fog light has started to stay on (whilst head/rear lights are on) wether the switch is in or out. The switch 'on' light stays illuminated when the switch is in both positions.

Does anybody have any suggestions please?

[RJS_90q]

Suggestions:
Faulty switch staying 'on' in both switch positions or a sticking relay ? - if you disconnect the switch from the wiring, what happens ?

If the foglights go out, the switch is likely to be the issue.
If the foglights stay on, maybe the relay is sticking on ?

Just some thoughts, hope they help.

Regards,
Bob

[Mease]

Suggestions:
Faulty switch staying 'on' in both switch positions or a sticking relay ? - if you disconnect the switch from the wiring, what happens ?

If the foglights go out, the switch is likely to be the issue.
If the foglights stay on, maybe the relay is sticking on ?

Just some thoughts, hope they help.

Regards,
Bob

Thanks for your suggestions Bob
I'll give them a go. I've took the bulb out of the cluster for the interim...

[tec946]

Hi
I had the same problem on my 80 estate and it was the earth on the cable that is routed through the left hand side of the tailgate. Fitted an in-line splice and it cured the fog light problem.Hope this is of some help.

[Mease]

Apologies for not replying sooner...

It's not a faulty relay.

I've definately got the problem narrowed down to the wiring on the left side of the boot because when i wobble the cable there the foglight flickers. So I will have to look at this area with fitting an in-line splice in mind. I still need to locate the fault specific though.

Will keep you posted.