There is an accessory vac leak traced to the A/C cabinet switchover valves. I plan on replacing the 5 valves.
Are the valves accessible from the passenger side dash underside kick plate removed?

There is a black vac line from the engine compartment routed from the engine switchover valves to a three way connector, one to the VCV bottom, and the other into the passenger compartment. Schematic labels it Vent to Passenger Compartment. It is open.
What does it connect to and is it accessible without removing the dash panel?

Advice on proceedures would be appreciated.