Just bought a "lemming-blaster" Italian horn, but have no clue where it goes in my 2001 S4. Pretty packed in there. Any tips?

 

It's behind the bumper on the passenger side afaik. Just have someone lay on the horn while you stick your head in there, you'll figure out where it is very quick! I think you'll need to remove the headlight to access it easier.

 

Thanks. I thought I'd seen something that might resemble a horn in that area, so I'll pull the headlight and take a closer look. Probably a 3 day job....

 

So I dismantled the air box, removed the headlight assembly, and was still faced with oil radiators, coolant hoses, and other immovable objects to the point where I still could not see anything resembling a horn. In addition, my wife had honked for me a few times, and it seemed there are two horns, one on each side. So I gave up. I'll just mount the new horn separately, with its own switch, and use it when I need it. These cars are worse than Porsches to work on. Still love 'em though...

 

Now I'm told it's behind the bumper, and the best way to access them is by removing the belly pan. Oy veh!