Hey dude,
I know a fix for "Airbag light is on, constantly".
It's some where on SAU but as far as I remember, this happens if the steering wheel or airbag has been unplugged for too long?
Anyway, the fix is, turn car off, open drivers side door, but press and hold the little door sensor (so the car think the door is closed), then turn key to ignition without starting the car, then quickly press that door sensor at least 7 times and just hold it. Then just turn car off.
Once you have done that, that should reset the airbag light.