2000 626LX Trans Line Pressure Port

Oh yea, it is a 4cyl auto transmission. So I believe it is a CD4E transmission. Anyway, where do you hook up your gauge to measure the actual line pressure which comes directly off the pump? I see a few plugs on the tranmission but do not know which one is which pressure. The pressure line to the cooler is a differnt pressure line as it is coming off the converter. I believe pump line pressure should be 50-175 PSI for D, 2, & 1 and 73-252 PSI for P, R, and N. Please correct me if I am wrong. Also, is there a particular method to test the pressures? Thanks for your help.