747 VC lighting

Hi Guys The 747 VC panel lighting seems to have a mind of its own. Even though the checkbox (FS9) "pilot controls aircraft lights" is ticked the panel instrument lighting comes on with the cabin interior lights at their own convenience......not under control of the upper panel switches. The result is the FMCs particularly are very difficult to see at dawn & dusk. Is there a way to make the lighting controllable manually ? Any advice much appreciatedDavid