Where do you add freon to a 1986 Honda CRX ac unit?

To add freon to a 1986 Honda CRX's AC unit, locate the low-pressure service port, which is typically found on the larger diameter aluminum line between the compressor and the evaporator. Remove the cap from the port and connect the refrigerant canister using the appropriate adapter. Make sure the AC system is running and add freon according to the manufacturer's specifications while monitoring the pressure gauge. Always handle refrigerants with care and follow safety guidelines.