Location of A/C Low Side service fitting

Location of A/C Low side service fitting
Can anyone let me know where to find the low presseure side A/C service fitting on a 1987 Club Wagon. It has front and rear A/C.

I assume there is only one service port despite the dual A/C, Is this correct?
Thanks...Paul
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I am also looking for the same low side.

I am also looking for the same low side.

OK I found it. You need to remove the air filer box. Then follow the low pressure line from the compressor back up to the firewall and across to the passenger side. The fitting is right in the middle of the firewall pretty much right below the windscreen.
...Paul