Regarding special connector 843 written on it( is it ignitor for side airbags or earthing )

Dear Experts ,

Can anybody advice me what is the part about i.e side airbag or earthing ? This part is located near seat belt tensioner ( passenger front side on pillar of car,) two images are attached for info, image1 from YouTube shows big connector connecting two wires bit unclear picture, 2nd image is taken from my car shows some kind of adapter (843 ) not sure what it is connecting which is different from 1st image , not sure if any connection has been missed out to it is earthing point or some hidden connection behind this adapter to air side bag. I have looked the electrical diagrams but could NOT find more info about it , thinking to remove and scan the QR code to understand what is going on.

Yellow connector means some connection with AIR BAG does it mean side air bag connection please?

Any thought please, would be highly appreciated.

Thanks

Kind regards