I was tracing wires left from the PO behind my dash a few weeks back and I found a couple things I was curious about (sorry about the poor focus):
What is this plug for(it was snapped into the back of the dash panel)? Also what is the small vent to the right of the steering wheel for?

This plug was also snapped into the back of the dash panel (to the right of the radio):

 

The plug on the right is for the passenger side airbag deactivation switch and the left one is for the ESOF selector ****. I see you have manual hubs and the cc's didnt come with the airbag switch cause you're supposed to put the car seats in the back seat (unlike the ec's and regular cabs).

EDIT: The vent question came up a few days ago. Its where the temp sensor for the climate control is located on the x's and the newer SD's.

 

Nice call there Trevor, and he's right!

 

Thanks for the info Trevor!