@Black-Square Did some testing today. Negative results. Uninstalled all versions of the Caravan. Re-downloaded and re-installed, same results. Fired up FS2020 after downloading and installing the FS2020 version of the Caravan. Everything works as expected in FS2020! So, I go back to FS2024 and start the sim in safe mode. Again, same results. I have disable ALL add-ons except the Caravan, in case something else is interfering. Not sure what else I can possibly do to get things working right. Here is my list of issues:
Turning on Pitot Heat shows no amperage increase. Same with Stall heat. I do get an increase with the windshield de-ice.
Turning on Prop de-ice shows 0 amps on prop meter. Doesn't move at all.
Engaging the Inertial Separator has no effect on the engine. No increase in ITT, nor decrease in Torque (I did get a decrease in torque on FS2020, but no increase in ITT[pretty sure I read about this in another thread]).
I get absolutely zero instrument lighting nor radio back lighting. All flood lighting functions, but not the instrument lighting, not even a little.
As I stated before, all these items functioned properly in FS2020, so it isn't like I'm not operating them properly. You suggested a video so you can see what's happening. I don't have any recording apps installed on my sim computer. Besides, I can't show you what's happening, when nothing is happening.