Where is the horn fuse in the Mazda 2003?

In a 2003 Mazda, the horn fuse is located in the fuse box under the dashboard on the driver's side. To access it, remove the cover of the fuse box and look for the fuse labeled "Horn" or a similar designation. If the fuse is blown, replacing it with a new one of the same amperage should restore horn functionality. Always refer to the owner's manual for specific fuse locations and ratings.