Adding an ext temp guage

[stickk]

Looking for an option to add an outside temp gauge to my 2001 xlt. I've found a few cheap options on Amazon. Don't want to spend more than $50 or so. Just something simple that can sit on the dash and has a back-light.

[7.3Lariat]

I assume then that your truck did not come with the overhead readout that has that already?