Where to find A/C Recharge Port -96 Rivi

Hey guys, i have a 96 Rivi and its in need of a quick recharge, Where exactly do i find the port, i have scoured the engine looking for it but to no avail. I see the two connections on the smaller diameter pipe near the belts but found no connection on the larger pipe anywhere. Any help, including pictures would be awesome as i'm sweating like its in style here.

The one closest to the firewall.

Thanks guys, that did the trick, now its running a little colder.