Where is the Low and upper port located on the AC on 1994 Cadillac DeVille

I am trying to refill the AC unit on my 1994 Cadillac Deville, need to know where the port for loading the 12A Cans is located, I can only see one port on the condenser, is that it.

by in Blaine, WA on June 22, 2013
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