Removing A/C evaporator - question???

It's not a wire, it's a tube. It should be inserted into the evap, and may be bent in such a manner that it won't slide out or maybe corroded and stuck

Have you read the shop manual?

69 Dart:

http://www.forabodiesonly.com/mopar/showthread.php?t=244981

Here:

[ame="http://www.abodyjoe.com/pictures/Misc.%20car%20info/69%20dodge%20service%20manual.pdf"]http://www.abodyjoe.com/pictures/Misc.%20car%20info/69%20dodge%20service%20manual.pdf[/ame]

(Go thank AbodyJoe)

All they say on page 24-45 is "carefully remove capillary sensing tube"

Page 24-48 shows figure about re-installing the probe