The horn is located in the front passenger side of the engine compartment
close to the lower right corner of the radiator. It is not uncommon for them
to rust and stop working. Check for 12v on the horn connector and make sure
the ground connection to the frame is good. You shouldn't have to remove any
fender parts to get to it..... If you are going to play mechanic you should
get a good service manual for the car such as the Helm manual and learn how
a component works before diving in and tearing the car apart.....

yes, there should be a horn relay somewhere on the firewall that wil
click when you push the horn button on your steering wheel.  they ca
be very quiet though, so make sure you have everything off whe
checking - & maybe even have a friend help listen.  the relay i
the most common failure part, so that'd be where you should go first
 it is often on the firewall near the steering column, but can als
be in a fuse panel under the hood - shouldn't be too difficult t
locate