91 Protege - where is the fuse for the horn?

[TMalone]

I'm trying to locate my horn fuse. According to my Chilton's manual it should be in the fuse box under the hood, but according to the fuse box label it's not. I checked under the dash and couldn't see it called out on that fuse box either.

My horn is no longer working, although I can hear the relay clicking so I'm hoping it is just the fuse, but I can't find it to check. LOL

Anyway, any suggestions would be appreciated.
Twila

91 Mazda Protege LX, 5-speed