How do you recharge the air conditioning system on a 99 ford windstar SE?

To recharge the air conditioning system on a 1999 Ford Windstar SE, first locate the low-pressure service port, typically found on the larger diameter AC line. Connect a refrigerant recharge kit to this port, ensuring the canister is upright. Start the engine and turn the AC to the maximum setting. Slowly open the valve on the refrigerant can until the system reaches the recommended pressure, monitoring the gauge to avoid overcharging.