where is the fill nozzle for the refrigerant

The high side and low side fitting are on the driver side of the car one is out in front of the radiator and the other is in the line on the left inner fender. Unless you have the proper equipment with gauges to check the pressure you will not know if you need refrigerant or not you can't just add some the system will never work properly by doing than. But I hope this helps. Bob