If your airbag light is intermittently on this may be the video for you - 2005 Ford Focus HD
I am not a professional mechanic. This is not professional advice. I am merely a backyard mechanic. Work on cars at your own risk. In this video I show you the possible cause of an intermittent airbag light on your dash. It may be a simple as adding dialectic grease or "bulb grease" to the wire harness connection from the airbag to the steering column through the clock spring. I am not a professional mechanic. This is not professional advice. I am merely a backyard mechanic.