Are you sure you have a horn relay? Many don't, unless there's a fancy horn
fitted. I've had trouble with the sliding contact on the back of the steering
wheel on similar-aged Polos. If you remove the steering wheel (24mm socket) you
can try grounding the copper spring brush that makes contact with the brass ring
on the back of the steering wheel with the ignition on to try to make the horn
work (I'm assuming it's similar to the Polo system). Then you have to work out
if the spring contact is worn out, or needs bending out a bit or if it's the
ring on the steering wheel that's damaged.

The horn gets power through the fuse, and then the wiring comes back from the
horn, connects through the multi-plug on the side of the steering boss to the
spring contact, then to the ring on the back of the steering wheel, which is
then connected to earth when you push the horn pad. If you do have a relay,
this circuit will just energise the relay of course.

---
Dave.
UK VW Type 3 & 4 Club
http://www.hallvw.clara.co.uk/
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"Antony Gelberg" wrote in message
...
Antony Gelberg wrote:
Oops, hit send too soon.

I have an Mk2 Golf GTi with an MOT tomorrow.

It's going to fail unless I fix the horn. The horn unit works when
wired direct to the battery. I took off the wheel push and connecting
the wires does nothing.

The fuse is fine. I suspect the relay but have no idea how to test it.

I have a multimeter and will investigate but was wondering if there is a
common point of failure.

Haven't worked it out yet. There is nothing at the connector. I might
just buy a relay and see.

I notice that all the wiring from the engine bay disappears behind the
offside suspension turret. Where does it go to from here? Do I need to
take the dash out to get a good look?

Also, does anybody happen to know the path that the horn wiring takes
once it goes into the steering wheel boss?