One more comment FWIW. Once you press and hold LIT to turn the back light ON constantly. If you put the scanner into MAN mode, when it goes into power save mode the light will be turned off. When the scanner receives a signal, and comes out of power save mode, the light will turn on. I realize this is certainly not what we want, but it is one way to have the light come on only when there is a signal.
Note: When held on a trunked talkgroup the scanner does not go into power save mode because it is actually still scanning.
Happy New Year