There is supposed to be one unplugged line...for whatever reason the AC system needs an atmospheric pressure line or something along those lines (no pun intended ).

It's usually black, maybe with a white stripe, but you would know if one of your major component lines was unplugged.

__________________
"I would rather be ashes than dust!
I would rather that my spark should burn out in a brillaint blaze
than it should be stifled by dryrot.
I would rather be a superb meteor,
every atom of me in magnificent glow,
than a sleepy and permanent planet.
The proper function of man is to live, not to exist.
I shall not waste my days in trying to prolong them.
I shall use my time."

-Jack London 1876-1916

1983 300CDT (running WVO since 12/05)
1981 300SD (parts car)