Low side port

Todd, Low side A/C port, Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

2000 Lincoln LS AC Low pressure port Location
2005 Lincoln ls low pressure port
low side port 2003 lincoln ls v6 Google Search

The low side A/C service port is located in the low side line nearest to A/C compressor. Due to the design of low side hose, it is difficult to see. When looking down to locate the port, the low side rubber A/C line obstructs the view to the port. I would recommend removing top engine cover and driver side front plastic cover (That Covers ECU And Relays) to easily view the port and it will make it easier to access it if you need to charge the A/C system. Hope this helps you out.

The low side port is located in the low pressure side of the AC system, this is the larger of the two lines comming from the compressor.

The easiest way to locate the low side charge port on any vehicle is to locate the A/C compressor, follow the "larger" of the two lines all the way back to the firewall. Some where along that line you will find the low side charge port.
Good luck.
Regards,

mcdevito75 here, The low side port of your A/C is located on one of the shiny metal lines comeing out of the firewall, they are attached to the evaporator under the dash, from the firewall carefully follow these silver lines till you reach the charge port. The port may be covered with a brass looking cap, un srew the capp and the port looks like the valve on the tire.

look for the large ac line/hose and follow it untill u come to the small service port this is wher u charge the small ac line/hose has the large port this is the high side

2002 is what I have. should be similar

Service Gauge Port Valves
The high-pressure service gauge port valve is located on the A/C receiver drier manifold and tube assembly.
The low pressure service gauge port valve is located on the manifold of the A/C compressor manifold and tube assembly at the A/C compressor.

Item Part Number Description 1 19860 A/C evaporator core 2 19849 Thermostatic expansion valve 3 19A834 Manifold and tube assembly—thermostatic expansion valve 4 19D850 Manifold and tube assembly—A/C compressor 5 19E762 A/C charge port valve (low side) 6 19E762 A/C pressure relief valve 7 19703 A/C compressor 8 19D594 A/C pressure transducer 9 19712 A/C condenser core 10 19D701 A/C charge port valve (high side) 11 19N585 Manifold and tube assembly—receiver drier 12 19959 Receiver drier 13 19C734 Sensor—evaporator air discharge temperature

the low side charging port is near the AC Accumulator/Reciever dryer cannister in the larger of the 2 AC lines.

both of the a/c service ports should be located next to the pass. side strut tower. the low side adapter may be hard to find though. If youcan not find it there, it is possible that the low side port could possibly be at the dryer on the drivers side front up beside the condensor

I’m happy to assist further over the phone at https://www.6ya.com/expert/jonathan_3a3c556b4b17d1d2