I have a 1980 280ZX 10th Anniversary with a usual cracked dash. I noticed that the car has the Automatic Temperature Control and has an ambient sensor on top of the dash. I was able to locate another dash off of a 1979 280ZX with no cracks and in perfect condition. However, I noticed that it did not have the ambient sensor on top of the dash. Does anyone know if I swap these dashes out will I be loosing some functionality in my AC system without this sensor?