Yea it's only functional at night (with the headlight open) but I honestly do feel a bit of a gain... all it does is allow nice cool air to get in vs. the heat soaked air that would normally be getting in. I have been thinking and thinking and thinking about how I wanna do it next time instead and I think I have a better plan thought out. As soon as I get ahold of another turn signal housing I plan on redoing it.