It seems to turn off when the car turns off so nothing so far. I used the passenger usb and 12v. The 12v has a cover that flips up which allows you to keep it horizontal so the the light shines down .
Slim 12v
https://www.amazon.ca/Charger-Outpu...236_SY340_FMwebp_QL65&keywords=aukey+slim+12v
Bought a couple of these
https://www.amazon.ca/MOTONG-4pcs-P...ackage+USB&dpPl=1&dpID=41GYSgvqfTL&ref=plSrch
Slim 12v
https://www.amazon.ca/Charger-Outpu...236_SY340_FMwebp_QL65&keywords=aukey+slim+12v
Bought a couple of these
https://www.amazon.ca/MOTONG-4pcs-P...ackage+USB&dpPl=1&dpID=41GYSgvqfTL&ref=plSrch