Generally it is the one closest to the compressor, and on the larger of the two tubes. Don't worry though, the two fittings are different and the one with the recharge kit will not fit on the incorrect one.
The 2002 Ford Excursion OBD 2 port is under drive side dash above accelerator
Where is the picture of the los pressure port on a ford 2001 located
The recharge port is located on the passenger side near the firewall.
look for the port with the black cap on it, it's the low pressure port.
Where is ac low pressure service port on a 1990 ford mustang
The 2000 Pontiac Bonneville air conditioning compressor low pressure port is located on the bottom of the compressor. You can recharge your cooling system through the low pressure port.
where is the low pressure port for the a/c -- 93 ford ranger 4.0L -- super-cab
The 1997 Ford F1 50 pickup truck low pressure recharge port is located on the air conditioner compressor. The low pressure recharge port will be labeled as such.
The low pressure port on a 1990 Ford van is in the rear of the engine compartment. It is on the passenger side, near the firewall.
On the ac system, the low pressure port is the smaller port. It will be located on the line coming from the dryer. The low pressure line is the larger line. it will be on it.
The low pressure AC port on a 2000 Buick Century is located on the accumulator. It is used to fill the system with refrigerant and to check pressure levels.
The 2000 Acura air conditioner low pressure service port can be found on the top of the air conditioner compressor. The low pressure service port will have a blue top.