I had it as a a pink/orange wire

Definitely Purple/Orange on the wiring diagram I looked at, not Pink (PK) I don't think. What colour wire do you have at Pin No. 23 on connector C0580 at the CJB ? as a later diagram mentions Red/Orange but that may be facelift car.



Cheers
Col

Arh, thanks Col

I wonder what happened to this thread did the OP ever sort out the horn issue? I am in the same boat

Unfortunately that happens a lot. A thread is started by a new member looking to sort an issue and then they disappear. The OP hasn't posted on here in over 2 years so likely we'll never find out, sadly. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

I really need to sort this out as it will not pass safety inspection  1973 Clubman GT * 2013 MB C250 * 2013 BMW X1 * 2013 RRS HSE Luxury * 2016 Mazda MX5

Not a auto electrician and always thought the horn relay was built into the CJB for some reason, but looking at this wiring diagram it looks like it is actually a separate relay in the engine bay fuse box, R5 top left by the bulkhead assume would be same on a left hooker but not sure + fuse no.25 so might be worth checking out, or with the aid of wiring diagram rewire some how, only a suggestion as said not a auto electrician.

Click image to enlarge

I found a relay for the horn inside the fuse box in the engine compartment. I was able to test the horn, fuse except for the relay and the clock spring. This is how the relay looks like:

https://www.rrsport.co.uk/gallery/albums/u...relay.jpeg 1973 Clubman GT * 2013 MB C250 * 2013 BMW X1 * 2013 RRS HSE Luxury * 2016 Mazda MX5

Have you checked at the C2240R/C2238R plug/connector for a feed from the clockspring? look like a Green/Brown wire, could you also substitute the relay with one of the others to test that, as I'm sure one of them will be the same at least.

Cheers
Col

Relay moved on facelift models it seams

Last edited by Andy K on Thu Sep 05 2024 4:18am. Edited 1 time in total

It is the only grey colored relay 1973 Clubman GT * 2013 MB C250 * 2013 BMW X1 * 2013 RRS HSE Luxury * 2016 Mazda MX5

Last edited by thegolffather on Thu Sep 05 2024 1:44am. Edited 1 time in total

Col wrote:

Have you checked at the C2240R/C2238R plug/connector for a feed from the clockspring? look like a Green/Brown wire, could you also substitute the relay with one of the others to test that, as I'm sure one of them will be the same at least.

Cheers
Col

View the diagram in "my gallery" you can enlarge it then, are you sure it is the horn's "chirping" and not the alarm sounder by the abs pump/master cylinder/servo?

Cheers
Col

after using the car the radio control buttons on the steering wheel also do not work in addition to the horn. Could this indicate that the part at fault is the clock spring?

When I try to lock the car with the door open the horn alarms. 1973 Clubman GT * 2013 MB C250 * 2013 BMW X1 * 2013 RRS HSE Luxury * 2016 Mazda MX5

I does look that way.