If your compressor is new and not working, the problem is likely something else entirely, such as:
* Improper installation: The system needs to be evacuated and properly charged with refrigerant after a compressor replacement. A leak in the system is a common cause of failure.
* Electrical issue: Check the compressor clutch for power and proper grounding.
* Refrigerant leaks: The system might have leaks that need to be addressed before refilling.
Where you would add oil (if absolutely necessary, and only if you are experienced with automotive A/C systems): The oil is added through a port on the compressor itself, but the location varies depending on the compressor's make and model. You'd need to consult the compressor's specifications or a repair manual for your specific vehicle. Again, this is not usually necessary for a brand-new compressor.
Instead of trying to add oil yourself, take your vehicle to a qualified automotive A/C technician. They have the proper tools, equipment, and knowledge to diagnose and repair the problem, ensuring the system is properly charged and functioning safely. Improper handling of refrigerant can be dangerous.