aaand the airbag light is back again! ahhhh!

As title suggests, to my dismay my airbag light has come back on today, I had problems with it a month or so ago, took it into a garage where they diagnosed it as the driverside ignitor, then managed to trace it to a high resistance on the wiring (plugs), after a few times plugging it in and out and nearly £130 later it cleared. Been fine for the last few weeks until today, only this time the airbag light came on in the pod alongside the dash light flashing for passenger airbag, so it's making me wonder if it was ever the drivers ignitor at all?? Any help is much appreciated. Got mot due in may gah!!