A/C refill: Where's low-pressure port on N62 (05 4.8is)

[lemans4.8]

I Believe there is a leak in my system. Want to read the low side pressure and make sure it's 25-35psi. Anyway, where the hell is the low-pressure port on the 4.8is? Is it near the windshield washer fluid reservoir?

N62, 2005, 91K miles, never had A/C service, takes a while for A/C to turn on and lots of fluid/water coming out of right condenser drain and it's lightly staining the garage floor (always looks wet and won't scrub off)

[lemans4.8]

Is this it? I'm assuming yes....