location of the low pressure ac port on a 2010 ford explorer 4.0L V6

Open the hood (of course) in the back left hand corner of the engine compartment (passenger side) you should see a vertical, silver colored cylindrical canister with 2 silver lines coming out of the back of it. The low pressure port in located here. It will take some time to refill IF the pressure is really low, and you may need an extra can of R134a. Make sure you also have a pressure gauge so you can check the pressure in the line as you fill it. Make sure you DO NOT over fill it! The outside temperature does make a difference as to how much you will put into it. As a side note, the high pressure port is to the right of the radiator (in the front of the engine compartment, driver's side).