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TexasRover

Member Since: 24 Nov 2022
Location: Paris
Posts: 1085

2002 Defender 110 Td5 DCPU Chawton White

Whats up with these horns!

Ok, I am not much of a honker, but my wife insist I 'educate' the french drivers at times. So recently I honked and nothing.. no sound..

So check fuse (ok), check power at the horn (nothing). Also notice only one horn fitted on the left and wire has been messed with (spade fittings) so needed to dig further. Traced back the poor splices and hook up the horn - nothing. Mhh tried the horn on straight 12v nothing. Bad horn.

While first looking at LRParts I find these horn connectors are odd and well mine is chopped off. So instead I buy two (two tones) OEM Hella horns on Amazon with spade connectors.

Received horns today and proceed to wire one up... test and just a puny little buzzy sound. Hook up to 12v, same thing - bad brand new horn. Try other horn and finally proper horn sounds.

Then looking at my stash I find one old defender horn with the correct weird connector. Then I find the wire on the right side is dangling loose with the weir connector. Plug it in and presto horn sounds. So will leave that and get the Amazon returned so I can fit the second horn and then should be good.

So I have 4 horns (all Hella BTW) of which only two work. What's up with Horns are they that fragile?

20th Oct 2023 3:15pm

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 941

2000 Defender 110 Td5 XS CSW Epsom Green

Its a BMW horn standard BMW horn plug less expensive to buy a BMW horn. Yes they do fail especially when not used occasionally. I have two Hellas in my 110 as the OE failed after 20 years. meep meep…

2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

20th Oct 2023 4:41pm

rustandoil

Member Since: 08 Sep 2012
Location: Cotswolds
Posts: 745

2005 Defender 110 Td5 XS DCPU Bonatti Grey

You might find that you can get the faulty horns working by giving them a sharp tap on a hard surface.... The coil inside might be stuck and that might free it off.
But your post raised another point for me.... Are you saying that there is a horn connection on each side of the car?... I'm pretty sure I only have one horn fitted to my 2005 TD5

20th Oct 2023 7:04pm

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 941

My 99 build had a plug for a second horn on the passenger side but only one horn, I installed a second one

20th Oct 2023 7:12pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17446

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Td5 and Puma vehicles should all have wiring for two horns, one each side, a high note and a low note. I thought all vehicles had both but it may be that some poverty-spec models.didn't. Alternatively it may just be that the factory forgot to fit both sometimes.

All Td5 and Puma vehicles have a connector for the alarm sounder on the nearside, and all Td5 and very early Pumas also have the BBUS connection on the nearside. Later Pumas built without the BBUS need to have the wing harness swapped for a Td5 version if you want to fit a BBUS.

20th Oct 2023 8:06pm

TexasRover

Member Since: 24 Nov 2022
Location: Paris
Posts: 1085

Yes there seems to some science suggesting two slightly different tones makes for a more effective horn, hence you can buy them in pairs.

One of the new horns I bought started working with a tap (thanks) but rather than butcher the one remaining plug thats fits on the one LR horn I had laying around, I will leave the new horn on the shelf. I did have the two different tones.

I went from nothing to everything. Now I just to remember to use them.

21st Oct 2023 6:00am

Naks

Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645

2010 Defender 90 Puma 2.4 SW Alpine White

@op, you need this

https://www.instagram.com/reel/CyPXmhKRt9N/ --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged

Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

21st Oct 2023 9:45am

Procta

Member Since: 03 Dec 2016
Location: Sunderland
Posts: 5188

also i believe the horn is the same unit used in later metros and MGFs. I know the MGFs use the twin setup. Defender TD5 90 ---/--- Peugeot 306 HDI hatch back

Success is 90% Inspiration and 4 minutes Preparation # you can make it!

22nd Oct 2023 2:07am

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