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ideasplace



Member Since: 07 Mar 2025
Location: Essex
Posts: 7

United Kingdom 2012 Defender 110 Puma 2.2 USW Indus Silver
Twas not the switch
OK, an update (at last): I finally received the replacement switch this morning - a Lucas Redbox model, from Island 4x4 and it did not cure the issue, as I said previously the original switch metered out fine.

So, there has to be a fault between the switch and the lights. Logic (and all the circuit diagrams) say there should be a relay in there somewhere and it's that which has failed. Otherwise it's a cable fault in the loom which is going to be a complete sod to find.

Any other pearls of wisdom would be greatly welcome.

And if anyone needs a new light switch, plugged in once (and a new wiper switch which was incorrectly ordered) let me know! Defender 110 - 2012 2.2 TCDi Hard Top Utility HD.
Post #1063607 22nd Mar 2025 2:02pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17680

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Since your vehicle is ex-EA it probably has (or had) dim dip. A failed dim-dip relay could be the cause of your problems.
Post #1063610 22nd Mar 2025 2:27pm
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ideasplace



Member Since: 07 Mar 2025
Location: Essex
Posts: 7

United Kingdom 2012 Defender 110 Puma 2.2 USW Indus Silver
Resolved - Ignition switch replaced and it now works
Hi all, I had planned to replace the ignition switch and locks because the door locks are all jiggered so today after the disappointment of the light switch not fixing the issue I set about replacing the ignition switch, afterwards I thought I would check the lights and blow me down they bloody worked - totally random - don't know if it was a loose connection under there.
I had to remake a botched connection 'professionally' installed to run the fuzz light and other stuff so perhaps that was it.
In the process I discovered that the indicator switch is busted too - the plastic parts are shattered so I am ordering one of those - so that's all the stalks replaced!.
I'll do a final update when I get the part but hopefully this is the home straight. Defender 110 - 2012 2.2 TCDi Hard Top Utility HD.
Post #1063634 22nd Mar 2025 8:13pm
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 681

United Kingdom 
no pearls of wisdom, but the wiring dig's ive seen for the later pumas have a lighting relay, which is located in the battery or underseat box and a headlight relay which is supposedly located in the dash fuse box...
the lighting switch on the dash appears to supply the lighting relay in the battery box which in turn supplies the headlamp relay which then supplies the column switch... is it possible that the column switch is just supplied by that underseat lighting relay instead of a headlight relay if you are not able to see a headlight relay in the dash fuse box...
maybe you have already checked out the underseat battery box lighting relay..
it does seem an odd having two relays in the wiring diagram....
not in a position to check mine atm to see what my set up is..
Post #1063635 22nd Mar 2025 8:14pm
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ideasplace



Member Since: 07 Mar 2025
Location: Essex
Posts: 7

United Kingdom 2012 Defender 110 Puma 2.2 USW Indus Silver
Ii know, it's quite confusing - I have both the LR diagrams and the Haynes manual and they both show relays in the under seat box AND one under the steering column on connector C0282L, the one in the main undersea box is there and is/was always working but the column one is conspicuous by its absence. Defender 110 - 2012 2.2 TCDi Hard Top Utility HD.
Post #1063637 22nd Mar 2025 8:21pm
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 681

United Kingdom 
Sorry..I posted not having seen your post that you had sorted the lights..
Seems to happen quite a bit on here with me..
Posts don't always appear when I would have expected..
Anyway glad you are sorted..
Post #1063638 22nd Mar 2025 8:53pm
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