I did a quick check on my side and I don't think there is any mistakes for the taillights. They're working exactly as they do in GTA5.
Not the first time I see a GTA model making for a pretty good mod. Is there any tutorials around about the process and what it entails? I feel like this is a goldmine waiting to be exploited.
Fair enough. I guess nothing good in the world can be easy! Congrats on the release btw. I'd still love to get a peek behind the scenes if you ever feel like sharing your workflow