[s-cars] Horn relay

[Paul Gailus]

Does anyone know where the horn relay is?
Today the horn on my S4 came on by itself, but luckily
it stopped with a quick tap on the steering wheel.
It seems to be OK now , but it would be nice to
know where the relay is just in case I have to pull it. 
I know that you can disconnect the horn easily from
underneath the car with the bottom cover off, but
that option isn't very attractive if I'm on the road.

I don't have access to my Bentley right now,
so if anyone could help I'd appreciate it.

Paul