selling a new set of Prius c welcome light. Took me 1 year to find these since this is extremely hard to get in the states ( need to go japan) so I got them on my trip. Decided to go a different route. They mount on the bottom of your mirrors. It comes with all instructions( all in Japanese) and parts needed to install them. Liked it when I seen it on my friends car in japan. To my knowledge it taps into the sensor on your door handle that turns on your interior light with smart key ( I could be wrong). $60 shipped
Oh okay so you can tap it into the lock and unlock in your door that links to the dome light. Here’s a picture of it on my friends car.