heater cable

cuda,
I'll take another look tonight! thanks for the input... I took the assembly apart a while ago to replace the heater core and replace/create gaskets but i'm 99% sure i wouldn't have missed that one! If you have a picture that would be great though - maybe i've never had a complete heater box?
Not sure it makes a difference or not, but my car used to have a dealer installed A/C system. Believe that those below dash A/C systems were stand alone so i don't believe that it would have mucked with the heater box...