Me, me,me,
Be careful with the passenger side airbag. Most (passenger) cars as previously pointed out have a "toggle" switch that turns off the deployment of a PSA. Usually (depending on brand of car) this is controlled with a smaller key that fits a lock somewhere in or around the passanger side dash-board.
The reason I would advise caution is becasue the PSA can be deployed by a pyrotechnic charge (i.e. it is "fired" much like a shotgun case, this is why they can be disabled in passenger cars, for the little people) I would bring it to a registered garage and have it looked at before I went messing around with any fuse/fitting etc. The whole charge would have to be removed in order to make it safe should you not have a toggle switch in your vehcile, which is likely as it is commercial,that of course is not to say it couldn't/can't be adapted!
Rgds
S