Trying to find the heater control panel inside the car on 1994 Dodge Shadow

The panel controls the defrost to other positions There is no vacuum in the connections

Asked by for the 1994 Dodge Shadow
ck under hood for broken vcac lines that go through the firewall to controller 1st. this is a very common problem
The vacuum line under the hood going through the fire wakk is connected and does have a vacuum
follow the line to vac source and repair as req