How and where can a replacement be found for horn, airbag mechanism

What I did on a Skylark with the exact same problem was install a *universal* horn button on dash in easy reach of the driver - that way the air bag / horn pad could stay in place while leaving the original horn ground wire disconnected .. It worked like a charm .. Problem here is finding a air bag / horn pad that is in good shape - they all tend to decay over time. Universal horn buttons are available at most any auto parts store - you can choose the one that suits you best.