OK Mike/Alan - finally got around to sourcing an Airbag so could do with a full 'how-to' please before I blow myself up!
I'm sure there's a guide somewhere already done? On one of our threads perhaps??
Anyway in short open car door, open bonnet, wait for all displays to go off and then disconnect the battery. Leave for 15 mins for any power to drain from the system and the insert a flat blade screwdriver into the two rear holes at the back of the steering wheel/airbag. You need to feel for a metal clip and then push firmly until the clip lets go of that side of the airbag which will come free. Repeat for the other side and then the airbag will be free to be gently pulled towards you.
Un-clip the loom from the airbag connectors and then plug in the new airbag. You should now be able to line up the new airbag against the clips and push home...
Re-connect the battery and bobs your aunt fanny!