However ... Factory "WithAC" cars had a push-button controller for selecting the mode settings, which apparently operated off the engine's vacuum system, along with a slider below it for temperature setting. I am starting with a Factory "NonAC" car that uses a slide controller labelled with 3 nonAC mode settings (e.g. Off / Defrost / Heat).
Vintage Air asked that you use that to control the mode settings, but a "NonAC" sliding dash bezel does not have "MaxAC" or "AC" settings labeled.
We are attempting to engineer a means of removing the mode slide controller and inserting an original refurbish push-button controller into the equation. This requires some electronic parts (vacuum pressure switches) to convert the vacuum operated OEM refurbished push-button controller to send a proper signal to the Vintage Air system. That way I'm not stuck with a new 5 setting operation (e.g. Off / MaxAC / AC / Defrost / Heat) that is now labeled incorrectly with the old 3 nonAC settings (e.g. Off / Defrost / Heat).
The three "widgets" (e.g. vacuum controller switches) that we need to buy at ~$100ea have various vacuum pressure ranges they operate properly under, hence why I'm inquiring.