2002 Steering Wheel Removal And Air Bag Light Removal

[scimitargtc]

2002 Hdi Hatch - Haynes manual which covers up to 2000 MY says screws in the back of the airbag housing behind the wheel - 2002 looks as if there are 3 tabs but well aware of how brittle plastic gets before I go all cack handed and smash the thing any useful tips? Plus I need to reset the air bag lamp - ECU replaced with an identical unit (model refs etc all the same) but lamp still on - tried to use my code scanner ELM327 (generic laptop connected interface) but it won't connect - 'sees' the car but won't connect - used to work fine on my 2000W Hdi & stil works on my Fiat JTD 2004 so something amiss hardware wise - before I shell out more money any ideas who sells the 'best' gear at most cost effective prices???