I you mean haw to make it to sound: On the side of the steering wheel, at about 3:00 and 9:00. If you are asking about the horn, its located behind the right corner of the fron bumper. You have to remove the black cover that it under the car. Mazda put hard encourage in hiding it .
in the stearing wheel
It is important to know where the parts are within a car. The horn relay in a 1993 Mazda Protege is found in the cars fuse box.
Well I had a 1995 Protege but I think is on the same place. It's beehint the right corner of the front cover. You have to remove the black cover under the car to see it. Mazda hide pretty well.
behind the plastic grill on the front.
What's the firing order for a 96 Mazda protege
The horn fuse is the same as the stop lamp fuse
Your horn is in back of the radiator grill (Grill in front of the car)
you do nothing
The horn for the 1990 Mazda Protege is located near the right turn signal at the front of the car. To the left of the radiator when your looking at the engine with the hood up.
The fuse for the horn should be on the drivers side underneath the dash. There is a diagram on it that shows the horn fuse.
It is in front of the radiator and the horn itself can be bad.
Have your Mazda dealer parts department print out a picture of the relays location for you. They will do this if you ask them.