Electrical Connection - What didn't I plug in? 94 4.0 OHV

[Vamirr]

I'm in the middle of finishing up a transmission drop (slave cylinder issues) on my 94 4.0 OHV. I can't seem to find what connects to this black plug.

It's on the wiring harness with where the 02 sensors connect in at.

I don't really even remember seeing it connected when unplugging the 02 sensors, but that isn't saying much at this point...

Any ideas?

 

[brinker88]

That plug traces down to the wiring on my automatic transmission (A4LD)