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Author Topic: No fog lights  (Read 4547 times)

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Martin_1962

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No fog lights
« on: 16 November 2008, 19:37:14 »
Fuse OK bulbs look OK and light goes on on dash.

Rear fog lights do not work

What can I check please?
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HotShot

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Re: No fog lights
« Reply #1 on: 16 November 2008, 19:55:32 »
Have you got a multi-meter / volt-meter to check if you have current?

Sounds silly, as you will me not be so silly, but, are you clicking the correct switch (front fogs = no light on dash while working, rear fogs = light on dash when working).

Also...do you have the headlights on & the engine running?
I think you need the headlights on before the rear fogs work.

Hope this helps.
« Last Edit: 16 November 2008, 19:56:32 by HotShot »
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Andy B

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Re: No fog lights
« Reply #2 on: 16 November 2008, 21:00:23 »
Quote
Fuse OK bulbs look OK and light goes on on dash.

Rear fog lights do not work

What can I check please?

There's a relay somewhere in the system to prevent you from leaving your fogs on for days ... & days  ... & days after the last bit of morning ,mist, you can hear it unlatch when you turn your lights/ignition off.
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Martin_1962

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Re: No fog lights
« Reply #3 on: 16 November 2008, 22:06:26 »
Trace down wiring - oh dear - I'll start with a relay hunt (where is it MDTM?) then down to wiring.

Correct switch - 8 years driving the things ;D
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Kevin Wood

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Re: No fog lights
« Reply #4 on: 16 November 2008, 23:13:58 »
It's not looped through the towing connector to disconnect the fogs when towing I suppose? Could be grot in the contacts in the socket?

Kevin
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Dave DND

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Re: No fog lights
« Reply #5 on: 16 November 2008, 23:31:23 »
Worth swapping a fog bulb for an indicator bulb, just to check the bulb is ok ?

Do you have voltage at the bulb socket?
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markey mark

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Re: No fog lights
« Reply #6 on: 16 November 2008, 23:34:53 »
broken wire kevin near passenger side boot hinge ! :y
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Martin_1962

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Re: No fog lights
« Reply #7 on: 16 November 2008, 23:38:57 »
Quote
It's not looped through the towing connector to disconnect the fogs when towing I suppose? Could be grot in the contacts in the socket?

Kevin


DOn't think so - but I have hit the towing connector on the ground last week
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Martin_1962

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Re: No fog lights
« Reply #8 on: 16 November 2008, 23:39:29 »
Quote
Worth swapping a fog bulb for an indicator bulb, just to check the bulb is ok ?

Do you have voltage at the bulb socket?

Swapped with reverse :(
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Martin_1962

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Re: No fog lights
« Reply #9 on: 16 November 2008, 23:39:57 »
Quote
broken wire kevin near passenger side boot hinge ! :y


Next thing is test tow fog - incase the hinge wire is gone
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Martin_1962

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Re: No fog lights
« Reply #10 on: 17 November 2008, 10:17:41 »
12S 12N undamaged

Should I hear a relay click?

Will try a multimeter across the 12S tonight to check the feed to boot
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Marks DTM Calib

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Re: No fog lights
« Reply #11 on: 17 November 2008, 10:35:41 »
The fogs normaly do route via the towing connector.....and the quality of the contacts on the towing connector is so piss poor its a wonder they ever work!

There is no relay for the rear fogs....but it does go via fuse F28
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Andy B

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Re: No fog lights
« Reply #12 on: 17 November 2008, 12:06:43 »
Quote
The fogs normaly do route via the towing connector.....and the quality of the contacts on the towing connector is so piss poor its a wonder they ever work!

I bet the vast majority of 12N sockets sold are those without the extra switch inside to turn off the car's fog lights.

Quote
There is no relay for the rear fogs....but it does go via fuse F28
What's that on track 1555/6 towards the top of Mr Haynes diagram?  :-/ It's not specifically labelled, but i think it's the main light switch
Something definitely makes a click in the light switch if you turn your lights off with the rear fogs still turned on.  ;)
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Kevin Wood

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Re: No fog lights
« Reply #13 on: 17 November 2008, 12:09:34 »
Quote
The fogs normaly do route via the towing connector.....and the quality of the contacts on the towing connector is so piss poor its a wonder they ever work!

Agreed. I didn't bother, given that the probability of fog that I consider bad enough for a fog light is low, multiplied by the probablility of me towing....

Kevin

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Martin_1962

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Re: No fog lights
« Reply #14 on: 17 November 2008, 13:51:10 »
I didn't remove that link either - but I'll pull out the connector during the week and check
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