changed mine for an audi one much better Looks exactly the same
fairly easy took me bout hour.. (that included half hour not being able to find the horn and cutting my finger getting the old horn out lol) the instructions that come with it are on the back of the box and hard to follow if u want i will post up a pic of where i put mine as it will not fit in the same place as standard..
Was an audi A4 horn I changed it for matey cost me £6.