scanner connection location

So I am the new guy here, owner of a 2002 Mustang GT convert. Nice car, my favorite driver. Had to replace the engine last year, burned valve with only 70,000 miles. Things happen, nice to have a new motor.
Ran great until a few days ago, service engine soon light, erratic idle with a strong odor of fuel.
Pulled the MAF sensor and cleaned it. Took it for a ride and it felt much better, still didn't want to idle down right. Got back home and found that I had failed to hook the electrical on the sensor back up. Color me embarrassed. Hooked it back up and back to square one, still crappy idle.

So I have a code scanner picked out at Sears, the problem is I do not know where to plug it in. Can someone direct me to that connector and maybe a photo? Thanks in advance