I have the switch on the Core, the core sits 1 block away from the 4 Directional projectors (N, S, E & W) and the Dome Projector sits on top of the core. The area and the directional projector closest to the switch work so yes it may need a Read Stone current to make it work I will try and see if that is the case.
I also had another incident when the dome upgrade stopped working and turned my area projector into a sphere, luckily I was able to turn the power off to it or else all my hard work would have been in vain. Has anyone heard of this before?
I have so many forcefields because I am covering a large area!
I am of course making an underwater base :D