Many thanks guys. I was actually looking for a cabin light so I could find the switches in the pitch black.
Funny thing being is that I was starting certain missions at dusk but the cabin light wouldn’t be lit, which it normally is by default, although the scene was pitch black. I think it may have been because I had the gamma setting too low.
I’m trying to find the optimum lighting conditions for the 5K+ by altering time of day, gamma, and pitools brightness settings. I’ll get there in the end.