Trouble with my horn

Hello, I have an Audi A4 B6 2003 2.5TDI Cabriolet.
The problem I have is that the horn does not work.
Can anyone tell me where the actual horn is located, and can I get to it without removing any body work ?
Also I would really like to know if there is an easy way of fitting a new horn and connecting it into the wiring loom without trying to repair my old one.
I have my fingers, toes and eyes crossed in the hope that someone can help me.
Thanks

From memory i think theres one each side behind the bumper, take the bumper off, lots of you tube vids and guide notes here on forum.