Another fun thing if you have more time on your hands and have
nothing better to do with your VW Horn is.
Change the pitch. On most of the VW Hella and Blaupunkt horns there
is a cap in the middle and you can turn the small screw under the
cap. Pop the cap off turn the screw in or out and beep the horn, Turn
and beep till you find the Pitch you prefer.

I usually keep it an a regular ol Beep But to giggle like a school
girl it can come up with some very funny sounds.
Do some playing with it and you will see what I mean.

My father would on almost every vehicle he had would install air
horns with a relay and switch so if he got pulled over for a insanely
loud horn he would flip the switch under his dash and it would be the
stock horn.

All in Good fun!
Jonce