That does help. I thought I knew how it operated, looks like I was wrong. I was under the impression that the amount the monovalve would open or close was directly tied to what temp you selected. Then when you go to min or max, the relays would close or open and max or zero the voltage.

Help me understand then, what does the temp dial do? Does it control the amount of cold air that gets mixed with the hot air from the heater core??
Thanks!!!

SB: I have not checked the tempomat sensor yet. thanks for the measurements.