I fear, my friend it's not only the lights that will cause problems. Every area in the game also uses a lightmap to light up an area.
The lightmap is a second layer on any 3D part of said area. The Kotor games are old and back then the lighting of a level was pre-rendered, into a lightmap.
So your new modelled part is not contained in the old lightmap. Which means the game has no info on how to light up your new area piece.
To go back to your lights, there's saddly no way to extract the info you need; what color, brightness... etc. MDLops can't do that, it just makes dummy objects. The only info you have is the coordinates and the name of the light.
So in short to answer your question: No, not that I know of.
Though I won't say it's not possible to 'light' up the room. You'll just have to add in the lights in Gmax or 3DsMax, give them some values and see what happens in game.
Kotor modding is all about trial and error most of the times