saif,
have you asked your dealer or local m.b. shop if you could view the diagram?

i'm not trying to insult you but have you popped the hood and looked around and or had someone honk?

replacing or changing your horn should be a very simple procedure.

i'm just curious,why are you changing it?

peter

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*92 400e 124.034, SOLD

*92 300e 124.030, SOLD