[queuebert]

The blog writer's final design is basically what Ford uses in the F-series these days. But Ford's dials have a couple of functions that I didn't see mentioned. First, when you turn the temperature dial all the way hot and push hard into the stop, it turns on max defrost, and all the way cold and push is max A/C. Also, if the system is off, it turns on when you turn either dial. The dials are also large and rubbery for gripping with dirty hands or with gloves on, something a lot of manufacturers seem to ignore.