Dash out now issues with airbag light / Unknown connector

[SCZZI]

Removed the dash on my 03 BA XR6T a few weeks ago to replace the mix door rod, when putting the dash back I unfortunately now have some panel gaps a couple mm big on all the trim but more importantly my airbag light is on. I had read on some other threads that it flashes according to a code but I couldn't see it flashing (could be blind lol) When putting the dash on I did notice there was a spare connector under the steering coloum which I was told didn't need to be connected but I also noticed a White/Black/Red connector near the ICC which I couldn't figure out where it plugged into. I've attached a photo I found on the web of the plug I'm talking about. Any chance this plug is the culprit of my airbag light and where it goes? and does anyone know what plugs I should be checking for connection issues besides the ones under the seats?

 

TIA