[zekeman]

I looked inside both controls and there is what looks to be a thermistor or a similar looking device inside the auto control so possibly it is built in and senses the heat -a/c right near the unit although that would probably not be very accurate but I wonder where else in the truck the sensors would be placed and there would possibly need to be two sensors one for the driver and passenger..I'm gonna look into this I really would love to have the auto controls..both units look pretty much identical inside..Now I have to search out a wiring diagram or get a hold of the pin-outs of the plugs on an SR5 vs a Limited and see if the pins are the same..