Hi there! 😀 The lighting mod is actually a .txt file that will replace the Maxis lighting file. I spoke about it a little bit here. If you play TS2 on discs, just follow the instructions in the GoS thread to install it – remember to rename your Maxis lighting file to something else (like “lightingbackup.txt”) so the game will no longer recognize it (but you still have it as a backup), and remember to rename Spookymuffin’s mod to “lighting.txt” so the game will recognize it. 🙂
If you installed TS2 using the Ultimate Collection, the install path will be a bit different – I mentioned that in my other ask. 🙂 But you will still have to rename the file either way!
I hope this helps! And I’m sorry I took so long to reply to your ask D: you’ve probably figured out how to do this without my help! :3
simper fi 