4 Wheel Drive/SUVs: 1998 Bravada a/c recharge, line search, radiator

Question
Where is the low presure fitting on a 1998 Bravada air conditioning system, I'm trying to recharge the a/c but don't know where the fitting is.

Answer
find the biggest line coming from the condensir on the radiator and follow it back to find the fitting. There is a "can" looking devise on that line too for identification of the correct line. Search that line and you will find it...it will however be definatly under the hood on the passenger side of the truck