Help with fuel injection issue

After checking, poking, and replacing I finally just sat back and started staring at things, sometimes this helps me focus on the task at hand. I art of over by the passenger fender looking in at the engine, and then I looked down. I saw the purge valve solenoid and noticed it was labeled top on the solenoid and bottom on the purge vent. Then I looked at the two tubes sticking out, as it sat on the bracket the top and bottom part was accurate, but the tube labeled vacuum was on the line without the inspection port. So I went to the parts store, grabbed a new one (the old one is original from 99), installed it the way it came off, and the issue were still there, so I flipped it and Lord behold it fires right up and runs like a top now. Man I feel dumb.