Is there a light effect that will match the exterior lighting that you can use in an interior? IE when it is day there is light, when it is night there isn't light?

What I am trying to accomplish is at the end of a cave tunnel to have it show light during the day and just darkness at night.

Any thoughts or suggestions?

If you go to the emmitance tab of the object, go to the Exterior Emmitance. In Fallout 3 if you picked CapitolWastelandBoarderRegion it would change the coloring of the lighting with the time of day (ie bright orange in morning, yellowish in after noon, grayish at night) so it should be something named the same thing or very similiar in NV.

Ok found the one that changes color now the only problem is it lights up the whole interior. I only want it to light up in the place the light is put down.

I am using CaveLight01 with the exterior emittance set to NVBorderRegion.

Found a fix, used NVCaveLightExt with the same Exterior emmitance and it works perfectly!