Where is the freon port on a 1991 Mazda Miata?

On a 1991 Mazda Miata, the freon port for the air conditioning system is located on the passenger side of the engine bay. You'll find the low-pressure service port near the firewall, typically covered with a plastic cap. The high-pressure port is located near the front of the engine bay, close to the condenser. Always ensure the engine is off and the system is depressurized before attempting to access the ports.