Just expanding on the tip on how to find the lighting in the Stand_LM_night file:
Here's an example of using layers and filling quadrants and smaller sections in black and enabling the visibility one at a time to narrow down where something might be. In game anything in a black quadrant will be completely black. You could use this method for any of the files really.
Also note that the Alphablend_LM_night.webp file also controls the brightness of certain things (don't ask me which is for what

). Using this quadrant method is the quickest way to find something.