I doublecheck but I did not see the hard black plastic vacuum line connected to the Rotary Ported Selector/ Heater-A/C Controls. Those lines are various colors and followed them to the actuators. I'm thinking when the Vac line goes up inside the firewall/dashboard perhaps it connects to a module manifold but it's literally impossible to find. I appreciate the information Bowtie. What I would like to do is eliminate it and run a soft new vacuum line from within the engine Tee and off to whatever it hooks up to.