Hopefully it's a fuse problem. It should be one of the smaller ones under neath the hood but most likely on left lower side of your steering wheel.
Just take each of those out with a long nose pliers and see which one is burnt out and replace it with a fuse that will run you few dollars from a auto supply store.
I have attached to 2 photos for reference. The horn fuse is the 7.5amp one on the top right corner on the driver side. Hopes this helps.
Check out the diagrams (Below). Please let us know what happens.
Images (Click to enlarge)
Monday, May 4th, 2009 AT 9:48 AM