You need to get hold of a dummy squib and fit it in place of the airbag igniters, you need to remove the bag, unplug it and connect the little squib resister instead, then put it all back together, leaving the airbag supply cable taped to the squid and tucked away behind the dash, you can also simply use a resistor, but for the life of me I can't remember the value! I used to have a bunch in my desk for frigging test cars (but of course your not supposed to do it).
Alastair