Airbag light on and dealer is saying I need a floor wire harness for $1200....uh, no. Would like to verify they DTC so can someone tell me where the blue plug is to check the codes and will the SRS codes show up using that method?

Also, I know the dealer cannot repair the "improper crimp" on the SRS portion of the harness but has anyone fished around to actually determine what failed?

Thanks,

PS