Horn Beeping when turning

Usually when the horns goes off when you are turning it is because the circuit has a bad ground and the horn button is actually making contact all the time. Turning the wheel completes the circuit because the steering column is now conducting but the connection usually breaks once you bring the wheel back to center. Check you steering coupler to make sure it is not all rusted up. The ground to the horn actually passes down the steering column. This happened with my car when I first bought it. When I rebuilt the steering coupler, it stopped acting up and works in all positions. The copper ring under the steering wheeling allows the horn button circuit to rotate with the steering wheel. The little pin sticking up with the tiny wheel on the end of it is the electrical connection between the horn hot feed coming up the wiring harness and the horn switch which then grounds through the steering column. So in a nutshell the copper ring should move with the steering wheel but should only contact the little wheel when you press the horn button.