Clicking in dashboard while driving

I question if the two are related. There are relays that can cause the noise and there is a horn relay. Locate the relay that is making the noise to see if that is the problem. Also, check to see if there is power to the horn under the hood. If there is, replace the horn. If there is no power, chances are it's the relay. If your air bag light is on, then it is most likely the clock spring in the steering wheel.