Never thought of retaining the "electronically" part and plug it in as a dummy. But then, you will not acomplish anything, you will still have the failed t-stat code stored. Plugged into the dummy or unplugged. I'd just leave the harness unplugged. But that "cheap" Zions unit is still expensive at 200 bux less 1 buck... I looked at that unit since a loong time. But I'm getting fed up with this OEM t-stat that works only when it wants to.
The danger is that it can take the CCV with it when it gets cold for several days in a row....