[Aleks]

Unlikely to be a wire.

Get another unit off a scrapper is my route, just swap it out.

Of course you will then have the more serious problem of a disabled air bag requiring replacement.

MIL fault - get the codes read then a mechanics appraisal.

The car is likely beyond economic repair.

 

[Aleks]

If the airbag has been disabled or removed & you do not need it then no bother. I would not even do the cluster.
Get yourself a code reader I just bought the AD10 Advancer from xtool about $12. Check monthly or as needed in place of the MIL.