For instance, when another vehicle is hidden in the area — such as in a driver's blind spot — a yellow LED on the exterior mirror housing lights up. (autoweek.com)
If you love doing the tree, making cards or driving around looking at houses all lit up, enjoy it. (pinkymckay.com)
I've been in the «older house no light» situation before too, but it never occurred to me to craft my own solution.... (insidethefoxden.com)