under the steering wheel bottom left side
under the steering wheel, in the fuse panel. it is round
Bottom left to the steering wheel. Left of the brake petal. Take the carpeting off to access the fuse panel
under the steering wheel to the left small black fuse box they use mini fuses
The wiper fuse in my '91 miata is in the fuse block located under the steering wheel and right above the left kick plate. There is a plastic cover that you remove that contains a fuse puller in it.
The fuse for your 1994 Mazda pickup truck four-wheel-drive can be found in the fuse box. The four-wheel-drive fuse will be the number 14 fuse.
There is one just under the steering wheel to the left and the main is under the hood on the passenger side near the front
fuse puller under steering wheel
fuse puller under steering wheel
If you open the fuse panel (to the left under the steering wheel), is is the upper most left fuse. It's a yellow one (20), but it also controls your stop lights so be careful. Hope that helps!
It sounds like the contacts in the steering wheel itself are bad. Find the "hot" wire to the horn under the dash, use a jumper wire to bridge from it to a good ground. If the horn sounds it is bad contacts in the steering wheel. If it still does not sound check for a break in the hot wire between the fuse box and the steering wheel. If the horn relay were bad it would not work at all.
The fuse box is under the steering wheel