Would that not be solved by the resistor method?
Heard a few things about that but not entirely sure :/
No, if your current seat's don't have airbags, you will want them turned on correctly in clip with the new seats. Will only be about £20.
Resistor method is pikey
If the original seats dont have airbags, then surely you wont have to do the resistor method anyway, as the car wont be looking for airbags in the first place?