I have a 2003 cavalier;and the horn doesn;t work . ineed help taken the steering wheel off to check wireing

Remove the right front wheel liner, its mounted to the body towards the front.

no connection between air bag and horn operation
the air bag is in a section but that whole section presses to activate the horn
can be on either side bottom or top will work the horn
probably right that there is no air bag
you will have to remove the wheel to check the horn contact under the center bit
check for a horn relay operation first

Un plug horn connect horn to another 12 volt power source, if it works then the problem is the horn button located in the steering wheel assembley

it is either located in the middle or on the sides of the steering wheel. usually on both sides.

You will need to check the fuse to the horn that should be located under the steering wheel or near the floorboard.

the wiring on the steering wheel hooked up to the horn may have come undone or even around the steering colum there are two screws on the bottom of the coloum you can remove to acces the wiring, check to see if you may have a chaffed wire or even a cut wire

If your horn isn't working and it isn't the horn itself the next thing to check is the horn wire in the steering wheel under the air bag. The little clip breaks off in time and the horn wire pops out. To repair you can remove the wheel and replace the part but I usually grind in a new notch in the old plastic and re attach the wire and it will work again.
Test the horn itself first. Just remove the connection to the horn and attach 2 wires to a live battery and tough the 2 sides of the contacts on the horn. If it blows the horn is good. If not replace the horn before you go any further.

It sounds like the switch itself, on the steering wheel, are not making contact. I'm guessing that if you can remove the front part of the steering wheel you could check and clean the contacts and also give you a chance to test the horn, while you are in there.

It's a pretty long procedure to type out,so go to autozone.com,register and input your vehicle info,then you can access their online repair guide,they have the procedure to disarm the air bag(s),they are under the chassis electrical heading,follow them to a tee so you don't set the air bag off,the cover maybe screwed on thru the back of the steering wheel or may just be held in place with tension clips,the repair guide isn't clear on this so look for srews first,if you don't see any you should be able to pry gently off with a screwdriver,the horn switch will be in the cavity underneath or possibly attached to the back of the air bag itself,it's just a small springed tab with a wire attached that touches the metal of the steering column.I hope this info helps and please be careful to follow the instructions.

Check all of your fuses if you have electrical troubles and also check the wiring going to the horn and inside the steering wheel but DO NOT open the steering wheel if you have SRS/Airbags as you never know what may trigger it and send that screwdriver you were using to pry it open thru your head or torso like a bullet!Other than trying not to die it shouldn't be too hard to figure out the problem.Probably a fuse or loose connection =] Good luck!