What fuse is for the horn in a 2000 Chevy Blazer?

There are 3. In the panel of fuses behind the driver's door, there should be one, you can locate it with the owner's manual or the picture on the fuse box cover but I don't think it's by itself. Then under the hood, on the driver's side there is a black box. In there is a lot more fuses. These are the fuses that have a crap load of power running to them and thus can't be with the other one's inside the door. That would be way too much power running through the dash. If u wanna cut everything that has to do with the horn, then u wanna pull the horn relay. other wise there is another fuse that's for the horn. Check the manual or the illustations on the covers of both fuse boxes. . Good luck :-)