Airbag witness light is turned on intermit

Hello.
I have a Nissan Primera P11 of the year 1999 and for some time the airbag witness has come on.
It is not always, it is intermittently, it turns on and off or turns on and continues on for a while, then turns off, turns on and is fixed, .........
The truth is that I have not given much importance, but now I have to pass the ITV and I do not know how to make that light disappear.
I have proven that when I play the connection in the co -pilot's gloveard, that light goes out, sometimes I have looked at that connection and looks ok.
Can you help me ???
ITV passed it in January.
I await an answer.
Thank you very much.

Hello everyone, that the SRS witness is turned on, it means that its control unit detects a failure in one of its main circuits ... Therefore, it is turned on means that it is running out of Air Bag when the fault occurs, if you suffer an accident, God does not want it, and the lñuz is turned on, it will not display the air bag when appropriate. According to what you express, you must have a bad contact in the wiring, with the car running, move the wiring where the glove compartment is (Air Bag passenger), when the light is eased or turned off, there is the problem, if you are a methodical when doing this procedure you will detect where the bad contact is. Greetings and good luck.