Figured I'd follow up with my temp displays.
I finally found the time to install 2 displays. I mounted them in the above panel. I was able to pickup power right there and when I shut the fridge off, they also turn off. Here's some photos.
First I marked out where to cut.
Second I filed the hole to size so the display fits snug.
I then plugged the displays together and ran the power and ground wires to the humidity switch feed.
Snapped it all together and tested.
*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS