Where are the sensors that determine the outside Temperature on the gauge in Centigrade or Fahrenheit on a 2019 650 executive. Do you need to be travelling to obtain a accurate reading? When held up in traffic the temp goes up?

It did the same on my 400 think they use the same sensor as the inlet air temperature

I think the sensor is in the front close to the instrument cluster from the back side(not the visual side of the instruments). you need to access it by removing the front.

when I rode my 2010 scooter it would change the temp a bit but it was quite stable and accurate. I was quite surprised how it was stable and didnt fluctuate like crazy. it was pretty accurate. I enjoyed having it.

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