I would like to know, were do you think the ideal spot is for an outdoor temperature sensor? I would say it should be located on the north side of the house, am I wrong in saying this?
Probably a good place in most cases. Avoid obvious sources of heat such as dryer vents, etc.
Shaded under a roof overhang (yes, north facing). If installing on outdoor unit, then shaded and above snow line.
Wayne's Air Conditioner Analyzer - Efficient Comfort.net
At my house it would be best at the south end of the house, but I have a huge live oak tree providing year round shade there.
If more government is the answer, then it's a really stupid question.
I was always told 8' high on the north facing wall.
We use the tstat wires that go the condenser (if there are two extra) and mount it in a location that doesn't have exposure to the sun.