same fault on my car with the horn not working
i found it to be the thin copper tape/card that connects the fixed wiring to the steering wheel . it had broken free from its connector and wouldn't make a secure enough connection again so its off to the scrappys to get another one
contact me at michelleleitch04@yahoo.co.uk if you need any help
not as lucky as the other people that get to wiggle some connections to get theirs working again
i know that this is a long time after your post if you have got it fixed at a garage already could you tell me how much it cost?
gordon leitch, November 2005