Look around under the hood. There should be a plug-in connector with 2 wires, that plugs into the android valve. It is nothing more than a potentiometer, that sends a signal to the ECM, that adjusts timing according to altitude. I removed the android valve from my old class C and added a manual potentiometer under the dash, so I could adjust the timing manually.
It's been too many years since I did that. I don't remember where the connector is.
Or are you talking about the valve that goes on the back of the carburetor?
Richard