Horn constantly sounding

So been doing work on the engine for a while now and with the ignition on the horn has started to sound constantly and will only go off when I turn the igntion off or take the horn relay out (numbered 53)
Any idea why this is doing this please? Just want to make sure it isnt linked to the problems I'm having or worse still taking 53 relay out isnt affecting anything else (pretty sure 53 just does the horn tho)

Thanks

Unlike the rest of the world VW powered the horn/s by feeding +ve 12v to them and earthing at the steering wheel to complete the circuit. Have you interferred with the steering wheel and its earthing all the time or the wire to the horn under the bonnet is shorting (insulation worn and touching chassis/gearbox)?

Couple of things
Does the horn relay click?
Could be a stuck relay.
Also the tab from the steering column assembly can touch the contact ring under the wheel or the tabs is bent down shorting against one of the screws that hold the assembly in place.


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If you have a vw owner about as k to borrow Thor horn relay a quick swap over will soon rule that out.


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Vw has power applied to the horns, and switches ground.  So you might want to remove your ground wire from the horn to stop it.  

You could have the horn ground shorted to a ground source, Could be a Water migrated relay, a regular 53 relay is used and you can use a 40a fog light relay form a parts store.

Here are 2 of the weirdest ones I personally have seen on my rides.

The turn signal wiper arm bent and shorted out to the case of it.  

Then I had a Turn/Wiper stalk screw that was stripped and shorted out to the slip ring on the steering wheel.

That was one of the easiest things to fix.  I took the bolt out, and took it to my hardware store and got a sheet metal screw the same length, and used it. It bit into the upper steering switch/bearing holder and tighten up nicely, was about 30 minutes work versus ordering the upper bearing waiting for it to show up and I figured that the other 2 were probably the same state so I replaced all 3.