of coures it will connect with a wire
Could be the steering column spiral (the wire harness that's coiled up and includes wires that connect to the horn/cruise, etc.) needs to be replaced. Or the steering bolt needs lubrication.
Run a breaker button from horn to car interior to battery
To wire up a car horn with a button you first need to run one of the wires from the horn to the battery. Take 1of the wires from the horn and run it to where you want the button to go. Connect the wire to the button and that's it.
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 horn has a ground and hot wire .usually only a hot wire because the horn body is grounded.it also has a horn relay.check the wires(wire)and check the relay.if these are good,the horn may be shot.this is all assuming the horn button or contacts at the steering wheel are good.
If there are no bolts holding it on then it pries off.
Removing a standard steering wheel from a Chevy Cavalier requires taking off the lower steering column and horn button. The steering wheel is held on by mounting screws, after removed be sure to unplug the horn wire.
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Use wire to briefly connect the horn directly to a known good battery. If it sounds investigate horn switch, wiring and horn relay if present.
The horn wire going to the steering column is undoughtly shorting out. Have it looked at as the steering wheel has to come off etc.
the horn relay on my '03 sunfire is under the dasboard taped to the wire bundle to the left side of the steering column.