A warning and emergency light module removably attached to a tailgate of a vehicle. A contoured fixture having a length and couture to match a panel of the tailgate holds a light bar within a channel. End caps placed on the opposing ends of the assist in holding the light bar ends in the channel and the contoured fixture on the tailgate of the vehicle. In another embodiment, a warning and emergency light module is attached to a roof of a vehicle so that lights forming an array extend longitudinally along the side of the vehicle. Visibility in all directions and functionality of an emergency vehicle is enhanced.