Abstract: A fastener assembly for securing a roof marker lamp to a vehicle includes a plurality of fasteners extending through the roof marker lamp. The fastener assembly also includes a plurality of retainers disposed adjacent the roof marker lamp to receive the fasteners for preventing the fasteners from exiting the roof marker lamp and adapted to be snapped into apertures in the roof to secure the roof marker lamp to the roof. The fastener assembly further includes a plurality of slides cooperating with the fasteners and the retainers to pre-assemble the fasteners and the retainers to the roof marker lamp prior to securing the roof marker lamp to the roof.