A convenience light for the rear storage area of a motor vehicle also serves as a breakdown warning light. A light source on an underside of the storage compartment lid is a warning light visible from behind the when the compartment lid is open. A reflective panel is disposed on a lid-receiving portion of the vehicle body to reflect light from the light source toward the lid when the lid is open, so that the light and reflective panel combine to serve as a convenience light for the storage area. The light is detachably attached to the compartment lid and has a battery to power the light when detached from the compartment lid. The light source has three lighted segments foldable relative to one another when detached from the compartment lid to form a triangle. The light is thus usable as a warning triangle for a disable vehicle.