Radiator fan warning light - How to fit

4 years 4 months ago - 4 years 4 months ago #169997 by David Aiketgate

To fit a warning light (as above) to alert you to the rad fan running is pretty easy.

Disconnect the battery!

First you need to splice in a wire to the positive feed to the fan from the yellow fan relay under the bonnet.



Then feed the wire across the bulkhead to the spare grommet directly behind the instrument pod. Pierce the grommet and feed the wire through.


David
:shrug:
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4 years 4 months ago - 4 years 4 months ago #169998 by David Aiketgate
Then you need to release the instrument pod.
Starting with this


EDIT ( I've now found that with a bit of wiggling you can simply release the cowl by undoing the 4 screws and ease the cowl forward and rotate anticlockwise to get it out of the way and then remove the 4 screws holding the instrument pod. This means you don't have to remove the steering wheel )



So, the outer cowl of the dials is held in with 4 screws, two shorter ones here


and here


and two others here


and here


You can now ease the cowl forward and rotate anticlockwise.




The instruments are also held by 4 screws, two here


and here


two here


and here


It is now possible to pull the instrument pod forward carefully.


Ease it forward to access the 4 warning light bulb holders on the right.




On my car the 3rd one down is redundant.( auto transmission fault).
(Obviously, if you have a Steptronic, you'll need to use another redundant warning light but the principle is the same.)



I removed the bulb holder.Twist to remove.



Take out the bulb and run a 5mm drill through the holder from the back.

You can now push a 5mm 12v led in from the back.


I used a pre-wired 12v 5mm blue led but the colour choice is yours. That warning position has a yellow filter on it so any colour led will work.
Because the led is setback in the holder it gives a much softer illumination to avoid heart attacks the first few times it comes on. :bust:

David
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4 years 4 months ago - 4 years 4 months ago #169999 by David Aiketgate
If, temporarily, you don't refit the grommet where the wire comes through you will be able to see the wire and hole directly behind the instrument pod. :yesnod:

Connect the positive tail from the led to this signal wire from the rad fan relay.

You can connect the negative to a handy GND post on the rear of the pod.



David
:shrug:
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4 years 4 months ago - 4 years 4 months ago #170000 by David Aiketgate
Reconnect the battery.

Check that the light is operating correctly. You can wait for the rad fan to kick in or remove the yellow relay and bridge the connections to force the issue.





Once you are happy, replace the relay, you can refit the instrument pod and casing . Fit the grommet properly. and Bob's your uncle! :broon:



David
:shrug:
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The following user(s) said Thank You: Leigh Ping, Bob, cairnsys

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4 years 4 months ago #170012 by The driving dutchman
This mod is on my tot do list! Thanks. I guess you could also use the normal bulb and spray it black for a low light level.

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4 years 4 months ago #170013 by The driving dutchman
Or put some thin tape on the coloured warningsign...
PS Whats the hook under you instr.panel for?

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4 years 4 months ago #170014 by cairnsys

The driving dutchman wrote: PS Whats the hook under you instr.panel for?


To hang his takeaways from :coat:

Robin ;)

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4 years 4 months ago #170022 by David Aiketgate
LOL.

It was to stabilise my satnav mounting arm.

Gone now, it's an old photo.
I use a cd slot mount instead. :yesnod:

David
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