I have a 1991 S10, but looks like I have an OBD plug in
 

Hey guys, I have a 1991 S10, I would love to get a scangauge or MPGuino setup, and it looks like my vehicle has the OBD connector under the steering column, could it possibly be an OBD-1? What can I use for this? Thanks, apologies if this post is in the wrong place, I am new :)