A lighting system for a motor vehicle 1 is disclosed in which a light source 4a, 4b, 4c, 4d is fitted to the inside of each door 2L, 2R, 3L, 3R so as to selectively provide interior lighting when the respective door 2L, 2R, 3L, 3R is closed and puddle lighting when it is open. Each of the light sources 4a, 4b, 4c, 4d is mounted close to a waistline of the door 2L, 2R, 3L, 3R to which it is attached and is arranged to project light in a downward direction so as not to provide a distraction for a driver of the motor vehicle 1.