If you haven't done your texturing yet, do that first. It will help define the mood automatically. Everything looks too flat right now. As if it's all made of the same metal. Once it's textured, as others have mentioned, the lighting will come from the lighting scheme. If you're just asking how to make the lamps glow, that can be taken care of by a shader, unless you're really crazy, in which case you would model the light fillament and then a clear bulb, and have the fillament glow