I found the Ambient Air Temp Sensor! 2008 ProStar...

[Waterloo]

I rewired the thing, called my buddy up at International who is now a salesman... He hessitently said move it. The sensor has a metal clip on it to attach to a 1/8 inch thick, or less flat surface. I stuck mine up right where the hood meets the door, on the cowl where the windshield wipers go. My cowl is kind of busted up from the previous owner, but it still attached none the less. The probe, sensor, is pointed straight up, 12 o'clock position. It is reading normal temps according to my iPhone.