Abstract: A light bar contains one or more rows of light-emitting diodes (LED's) in a housing which extends across substantially the entire width of a windshield of a vehicle and is narrow in width to minimize interference with visibility through the windshield. The housing has an interior forming a channel with a throat; the throat acting as a hood which directs the illumination out of the windshield and minimizes stray light. The LED's are arranged in banks generally symmetrically arrayed about the center of the length of the housing. Two of the banks, preferably equidistant from the center, are tilted in opposite directions to each other so as to project light toward the right side and left side of the vehicle. The LED's may be illuminated continuously or in selected sequence, as established by the user with a switch on the housing. Attached to the housing in a separate compartment is another bank of LED's which may direct light inside the vehicle for use as a dome or map light.