Abstract: In a roof liner of a vehicle having a light source which is arranged on a movable sliding liner, the roof liner having a transparent roof liner segment and it being possible to close the area underneath the transparent roof liner segment by means of the sliding liner, the sliding liner has first contact means which are electrically connected to the light source, and the roof liner is fitted with second contact means which are electrically connected to the on-board power system, the contact means being electrically conductively connected to one another when the sliding liner is closed, in order to supply energy to the light source. These measures avoid complex routing of electrical lines to supply energy to the light source.