You have CoT as well (Night level) ? Use that to brighten up outside nights..
This is for interiors:
[ENVIRONMENT]
DirectLightingIntensityInterior (direct light sources only - sun/moon - in general it wont lighten up dungeons - leave this value between the Night Day in or set same as Night Day)
AmbientLightingIntensityInterior (adjusts ambient light to lighten up the dungeon - I guess this is what you want)
AmbientLightingCurveInterior (adjusts the curves)
PointLightingIntensityInterior (adjusts point light sources - fires, torches, etc inside)
PointLightingCurveInterior (curves)
Pointlight ha sa desaturation value is well, perhaps you have to play with that too
These are for nights:
[ENVIRONMENT]
DirectLightingIntensityNight
AmbientLightingIntensityNight
PointLightingIntensityNight
Another thing you might like to help brighten stuff up:
http://skyrim.nexusm...com/mods/27443/
In general RLO (what that ENB you have needs) + ENB = very dark stuff. Also make sure you have set the in-game brightness to what is advised on that mod page ( SkyrimPrefs.ini -> [Display] -> fGamma=1.2400 )