Thank you, that's the one. I just didn't take the time yet and have had trouble posting images.
I appreciate the help.
It has been a great add on and the youtube video was a huge help.
It's a little tougher in a Casita but doable.
Certainly, a new Casita is a "blank slate" that can greatly benefit by improvements, Vent lighting is one of them. But I prefer indirect lighting for the vent like you see in commercial aircraft interiors instead of in your face light.