Rear Fogs not working K series 1992

[Andy Lef]

UPDATED TO reflect topic 

Rear Fogs not working conundrum.

I have read load on the forum about the fogs woes of others adn have tried to check as they have done.  I used to have working fogs (they occasionally needed a tap to make them work) then swapped out the halogen for some JAL LEDs;  And then nothing from the new LEDS (they do work I have tested them)

So this is an attempt to get them working again.

Hi 

just trying to identify the relays in the picture (specifically which one feeds the rear fog lights). So i can try and troubleshoot the fog lights not working

The red one I know feeds the LED indicators I fitted but 1, 2 3 need assigning.

The car is. a 1992 build originally a 1.4ss but suspect that may not have much influence?

Assist appreciated as I try to get the rear fogs to work again.

Andy

 

[Jonathan Kay]

The wiring did change after early Ks.

The relay layout is in the Assembly Guide. I have both versions: please let me know if you'd like a copy of the diagrams

Jonathan

[Jonathan Kay]

This is the layout in the early 1.4 K Assembly Guide:

 

Jonathan

 

 

[Andrew 21 Edney]

Fuses don't seem to match the photo.

In the 21 build manual I seem to recall the fuse diagram was reversed (so as if looking from behind), but that would not explain the differences either...

[Andy Lef]

So looking at the responses above - thank you (Jonathan I have PM'd you);

I have already had a good look at the forum and seen the other fog light woes that have been discussed.  I have done a lot of the work and tried other fixes as suggested, but sadly still nothing.

Fogs were working but when swapped out for JAL leds they stopped?

I have to assume that the fogs are linked to the lights relay as they are driven by the dipped headlights for operation as per the rules and that is how they worked before.

I have checked the ground by running a positive wire direct fro the battery to the lights - they work on both sides.

But when connected to the positive (in the loom) the g=fogs do not work;

No other lights are impacted;

Question the loom is the original from 1992 / i have owned the car since 1999. Could the wiring have perished somewhere along the loom?

Any ideas for what I should test next (and how) I am seat of the pants electrical novice.

in anticipation 

Andy

[Jonathan Kay]

Check fog light fuse. If that's OK check fog light switch.

Do you have a multimeter?

Jonathan

[SM25T]

LEDs are of course polarity sensitive. Are they connected the right way round ?

[Andy Lef]

Yup ref polarity - they are the right way round.  the new lights come with black (neg) adn green (pos) wires.  The car has black (ground) and orangy or red and white (Pos)

[Andy Lef]

Jonathan, 

Switch lights up with the amber strip light (old rocker switch), will check the fuse in a mo, when i can get to the car without being soaked.

 

Andy

[Jonathan Kay]

Check the voltage at the output terminal of the fog light switch as well as seeing the light in the switch illuminate.

Jonathan

[ScottR400D]

Have you checked the. With the ignition of, on, engine running etc. I think my fog doesn't work unless the ignition is fully on, it may even need the engine to be running.

 

 

[John Vine]

Re #11:

For info, the rear fog on my 2008 car comes on with both dipped and main beams -- no IGN required.

JV

[John Vine]

When you fitted the JAL unit, you would have unplugged the original 2-way Econoseal male connector, and then plugged in the JAL one.  Are all the terminals in the connector (male and female) aligned properly -- not pushed too far back or bent?

JV

[Andy Lef]

Yes i have checked with the lights on with ignition on as well as with engine on - still nothing.

troubleshooting continues.

 

 

[Andy Lef]

JV there was no econoseal when i took the old lights off, just plain old wire with crimp connectors.  But i have made sure that pos and neg are correctly connected.  I have added new econoseals to the new set up to tidy up the wiring.

Andy.

[Toby S]

Check the earth

I chased mine around a few years ago and once finding there was current getting to the fog with a multimeter, fly wired a new earth and it worked, came to the conclusion there must have been a break in the earth and hard wired a new earth

[Andy Lef]

Toby Hi thank you

Checked earth and it's ok for both sides.  I think I might have the opposite of you with the power getting to the lights - still checking but may end up with a 'fly wire' for the pos  as long as it keeps me on the good side of the MOT checker.

 

Andy