I'm in the middle of swapping my horn right now. Easy to get to, just unscrew the light facade, take out the headlight (four screws) dont worry about puttingthe beam out of line, the adjustment is made on the bit you remove anyway so taking it out will not affect it.
The reason. I too thought that the original one was not befitting of the vehicle, so wanted an 'up grade'. No more neep, neep.
Ideally I wanted a horn off of a citron, having owned a citron I know the French know a thing or two about horns but unfortunately a whole lot less about cars in general. I couldn't find one and also (ever since being a kid and watching the movie convoy) had always kinda wanted an air horn.
So I got a steeble nautilus air horn, and fitted that. It was too loud. Loud to the point of not being able to usher people on in traffic for fear of eother starting an altrication or giving a passer by a heart attack. I was concerned that if anyone did ever step out in front of me in the road that using it would cause them to freeze.
So I'm putting the original back in and fitting the air horn behind the drivers side headlight. Bit of a waste of time and effort really, well no. I'm rigging the air horn to a cable pull mounted in the roof console, steady truckin'. Can't wait. I've only wanted one for 30 odd years.
Well that's my horn related post. Wouldn't really have mentioned it but came across this thread and though I might as well.
Good luck.
Ian.

