This was an interesting read on placement on temp sender/probe in a engine. I know this is one of those subjects that turn into a "taste great-less filling' conversation. Just remember, what it covers is not the way but a way of doing it from a technical view.
Edit: the link says catalog but it'll take you to Mad Electical's website (madelectrical.com)
Edit: the link says catalog but it'll take you to Mad Electical's website (madelectrical.com)