Where is low pressure port 1996 Jeep Grand Cherokee?

It is under the hood on the right (passenger side) of the vehicle up next to the fire wall to the rear of the coolant recovery tank. Do not turn the freon canister upside down when filling this port and the engine is running. It will cause liquid to go to the pump and destroy your pump. Make sure you wear safety glasses and gloves when you work with this, as the freon absorbs huge amount of moisture and it will absorb quickly into your eyes if sprayed or spilled. The high pressure connection is on the side of the A/C pump near the front of the engine on the left (driver's) side.