Known Horn Issues?
I've just found that the horn doesn't work on my recently acquired 156 2.4 '03 JTD. I've checked cleaned and sprayed actual connections and earths on horns, to no avail; and fuse is OK.
I removed the bottom cowling around the steering wheel and noticed a small white plastic plug that wasn't attached to anything - what could it be? Is it perhaps where the cruise control connects if you have one or is a horn connection? I couldn't see anything obvious for it to plug into and it looked a little complex for a horn connection. There were some purple. orange, and green wires connected and I noticed that the horns themselves had purple wires.
Obviously because of the airbag situation within the wheel, I didn't want to fudge about too much with limited information.