Air bag light appears to have come on when the odometer reached 60,000 miles. Any suggestions on how to reset it?

Assuming it's not on due to a sensor malfunction, you could try taking off the negative battery cable. That will let the computer reset and might correct it.

the most likely cause is the drivers seat belt buckle. get one, go under the seat and plug the new one in(2 plugs) and disconnect your battery for 10 min. then reconnect. if it goes off then replace the buckle with the new one.