How do you add freon to a 97 ranger?

To add Freon to a 1997 Ford Ranger, first locate the low-pressure service port, which is typically found on the larger diameter aluminum line running from the compressor. Use a refrigerant gauge and canister to attach to the port, ensuring it's the correct type of refrigerant for your vehicle (usually R-134a). Start the engine and turn the AC to the maximum setting, then slowly open the canister valve to allow Freon to flow into the system while monitoring the pressure gauge. Be careful not to overfill, and always follow safety precautions.