that little black grommet is simply a cover for inspection purposes if you have tranny work done at a ford dealer, more times than not, your car will come back without that grommet. no fluid is in that vicinity. Have no fear =) But now, your trans fluid leak is odd... i don't see any leaks on the underside of your pan, where it is most common. but if you find it, let me know, because i'm getting a small leak starting too, and it's not from the pan.