Oops, almost forgot...
The temp probe for the outside temp gauge was slipped through the floor boards just below the drivers door. It is tucked away right behind the unibody seam/crease
I have found that it reads a bit high, especially when its sunny, and when driving slow. I think the probe is feeling the radiant heat from the blacktop.
The primary reason for the gauge was for freeze "alert" And it works great for that. When its cold outside and roads covered with winter nastiness, it reads spot on.