It's a 20 amp fuse located in the fuse box (black rectangle labled Fuse-Relay) under the hood. This is on the driver's side. Press the tabs in and lift the cover off. If tape is securing the lid, just use your finger nail to split the tape. There is also a horn relay.
Just pull straight out. If it is difficult you may use needle nosed pliers to pull fuse out.
The horn fuse is located in the fuse box under the hood on the drivers side of the truck. Lift off the cover of the fuse box and the underside of the cover has a labeled diagrahm. Find the 15 amp fuse. Remove and replace. However, I also have a 2003 suburban and found that the problem originates with a short in the horn assembly in the steerng wheel. The horn will keep working as a lock/unlock indicator, but will only work one time if the horn is activated on the steering wheel. It will keep blowing fuses.
in the fuse panel drivers side behind the door marked HORN
The 2005 Ford F3 50 horn fuse can be found in the fuse box. The horn fuse will be in the second column, fourth from the top.
The Horn uses the same fuse as the Cig lighter plug. It is a 15 amp fuse.
The 1999 Chevrolet Geo Metro horn fuse can be found in the fuse box. The horn fuse will be in the second column, fifth from the bottom.
When parts of a car do not work, it is important to know where its fuse is located. The horn fuse in a 1999 Chevy Blazer is located in the fuse box under the driver side dash.
Two separate items there. There is a horn fuse and a horn relay. Location can be found in the owners manual.
check the horn fuse
The 1994 Chevrolet 1500 pickup truck horn fuse can be found in the fuse box. The horn fuse will be in the second column, fifth from the bottom.
The horn fuse is under the hood next to the battery. It also controls the power to the steering wheel's cruise control buttons. The fuse is 10 amp.
The 2004 F-150 owners manual shows : fuse # 26 - 20 amp mini fuse - Horn Relay ( PCB3 ) , Horn Power