Honking horn blows a fuse
 

I was driving along yesterday and went to honk the horn. I got nothing.

I checked the other horn (the 560SEL has a button to select the horn to use) and again I got nothing.

When I checked the fuse, it was blown. I replaced it, and checked it with horn #2, and everything was fine. When I switched back to horn #1, it blew the fuse again.

I plan to disconnect horn #1, press the horn, and see if the fuse blows, if not I will replace the horn itself.

Now for my questions -

1. Where is the "American" horn? It's the one that get's used when the horn switch has the rear side of the rocker depressed.

2. What to I do next if disconnecting the horn and pressing the horn switch still blows the fuse?

Thanks.

Keith,

I am not sure where your horns are mounted but on my 300E they are very close to the airconditioning heat exchanger in front of the radiator. The wires were touching the fins on the a/c unit and wore through the insulation giving the same result. I just repaired this morning and also bent the wires away from the sharp fins on the heat exchanger. Hope this helps, Jim

most horns are a ground interupt circuits so would have to guess that the problem is in the horn itself as if you had a bad spot in the hot wire it would blow fuse as you put it in......
William Rogers......