Reversing Johnson temp control A19AAT

I have seen a few threads on here about this but nothing specific to help me accomplish this. I want to reverse my johnson temp control A19AAT from cooling to heating to help regulate the temp in my fermentation box. I am not quite understanding how to reverse it. The best post I found said there is a plugged terminal than needs to be unplugged and a black wire need to be removed and placed there. I dont really see anything like that. Does anyone have a pic or anything that shows what they are talking about. Any help would be appreciated.

ThankS!

does inside the cover have two or three brass connections?

It has two that have screws and connectors already plugged into. I found that there is a black plug between them and was able to pull it out and saw where it fit the same sized screw as the other two posts. I connected the black wire to that, and have the feeling this is what they were talking about. My fermentation box has not heated up like it did before and when I test the controller it kicks on when I move it to A higher temp the what is being read inside the box then shuts off when I raise the temp further. I think I have it figured out.