Re: Horn problem
Well that pretty much rules out the fuse then, could be a couple of the wires that connect the horn, honestly unless you love ripping bits of your ford out to have a closer look then i suggest you just take your car to your local ford service department and tell them whats happening and ask them to check it out, if you get a decent mechanic or your still under some sort of parts warranty then you might get out of the situation without paying a cent.
Good luck with it :)
.... Chirping second
... and NEAAAAARLY chirping third. Fiesta is the word. Its more than just a party on wheels.