Hi, grateful if anyone can advise please. my sons car, a V reg 306 has a failed stop light switch. This is only a low cost item to replace, but you have to take off the dashboard. My son has figured out how to remove the RHS, by the steering wheel, but cant fathom how to unscrew the left hand side, due to the passenger airbag assembly covering up any clues as to how unscrew and detatch it. Any advice please? Alternatively, is there any alternative to taking the dashboard right out? He has tried, but just can't get to the switch.

Thanks