Now that I have had some time to contemplate my naval, I understand why the cabin lights switch doesn't work!  This panel was developed by  Alejandro Rojas Lucena.  The download for this modification is from Simviation FSND.

I have this mod in my default 747-400 and the cabin lights switch works along with turning on the panel light.  That's why Mr. Lucena stated in the README about the panel, that at night, it's better on the eyes to not turn on the cabin lights because it also turns on the panel lights.  This developer added this 747 panel modification to his aircraft but screwed around with the lights and disabled the cabin lights along the way.

I found three Air Force One models, all based on that original Prosky model you probably have. Each one has something wrong with it. One doesn't have a VC and the landing lights are way too bright. A second one has horrible audio where you can hear the actual loop points of the engine noise. Man is that irritating. That model also regularly crashes my computer. The third one by Chris Evans (the one we are discussing) doesn't have cabin lights but everything else is working fine.

Thanks for helping out; no need for you to waste any more time on this.

I knew if I banged my head hard enough on this desk that I'd come up with the fix.  There are a couple of texture files that need to be replaced inside the texture.AF1 folder.  I will also PM you about this!