Grasp the front and rear
edges of the dome lamp housing and squeeze together to release the retainers
along the sides of the housing, while carefully pulling the housing down away
from the lamp base plate.
Remove the bulb from the dome lamp socket.
Insert a flat-bladed tool into the U-shaped slot along the base
of each of the integral retainers in the lamp base plate, then carefully pry
the retainers downward to release them from the roof bow.
Disconnect the electrical connector from the dome lamp base plate.