First of all thanks for the help to date, I can get the Air bag out OK.
There is no rattle or anything loose in the assembly when I shake it.
My Airbag is for 2003 fusion and has 2 wiring plugs at the back,one green and the other Black.
A good friend has given me a Fusion replacement airbag to try out if I wish, but its only got a single back plug at the back.2005 ???
Would it be a problem if I tried it out should the tapping still persist.