91 v6 a/c recharge

I'm about to recharge my 91 regular 3.8 v6 tbird with freeze 12, and have an idea of where the low pressure service port is on my car, but cant be certain... i think it's the bigger diameter (not by much..) port closest to the compressor tubed near the top of the compressor itself. i think the high side is the port nearest the radiator on the connection to the coil in front of the radiator (the condenser..?)

at any rate i really dont know much about a/c and cant find any decent information on it online. i can live without it... but man i would love to have it...

the port by the compressor is the port you want. good luck, ive had all kinds of trouble with ford a/c systems. i was even told i needed some locking clips. i finally just gave up.