I have a 1984 Lincoln Town car, the airbag light flashes 5 times then once.

http://www.ehow.com/list_7652177_airbag-light-codes-fords.html --- according to that link this is what it means: Code 51 (five flashes, pause, one flash) means the airbag diagnostic monitor's internal fuse is blown,

The air bag module must be replaced. There is no repair.

Thanks tuff. I forgot to mention that part. It's an internal fuse.