I see there are a few threads on "what plug is this" and now I have a couple more to throw into the mix:

1) (Driver's side)




2)

 

One I'd for the electric fan could be unplugged which can cause you lots of fun.
Two its the tps plug for the auto transmission. If yours is a manual then you only need the flat plug only or someone sold you the wrong tps sensor for 91+ and you need the one for pre 91, that's if your is auto.