Fitting resistors

[ForceIndia]

Got some resistors from maplin for deactivating the airbag light (after fitting new seats). There are 4 wires in total, 2 each seat. Do I fit 1 resistor per wire (so 4 in total) or 1 resistor per pair of wires (2in total).
Cheers

 

[bmh.01]

1 per pair. One for the airbag, other for the pretensioner.