Where is low pressure port 1996 Jeep Grand Cherokee?

If you are looking for the Low Side Pressure Port for the Air Conditioning System of a 1996 Jeep Grand Cherokee Laredo, it is located in the back of the engine compartment on the passenger side almost in the corner, sticking up behind the Coolant reservoir.

There may be black cap screwed onto it. The port and the line (hose) it is connected to is unpainted aluminum.

This is where I've recharged my AC and flipped the bird to Houston's merciless heat.