Removing A/C found a plug in the dash

[Turbo Skegget]

I have removed the A/C and most stuff associated with it and now i found a 2 wire plug that is located in the dash on the right side. It is the in car A/C sensor (red circle in pic). Is it ok to just remove it or do I need it for the heater to work properly and if so how should I wire it in?

 

[jetjock]

It's very important to the heater. Since it's not even connected to the AC system ("ac sensor" is a misnomer) there's no reason to mess with it.

On the next page:

http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=143

Everything to the left of the G-O wire, everything connected to the "heater control assembly", should be retained. Everything to the right of the wire is AC related and can be removed. I'd keep the fan wiring and water switch # 2 though.

 

[Turbo Skegget]

Ok, thanks will see if I can figure this out

 

[bioskyline]

someone can correct me if im wrong, but i believe the in car sensor is what runs the "auto" button on the heater controls.

 

[jetjock]

Right. It's the feedback, the "process variable" in automation parlance, that inputs to the system amplifier. Removing the sensor results in an open control loop. That'd be condition A here:

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=AC&P=41