Abstract: A safety warning device for an ignition switch comprises a cup-shaped base member which is conveniently secured around the ignition switch and a cup-shaped cover member pivotally attached to the base member which is normally held in a closed position to preclude access to the ignition switch. A safety message is conspicuously displayed on the outer and inner faces of the cover member to warn an operator of necessary precautions to take prior to actuation of the ignition switch. The cup-shaped base and cover members also provide a weather-tight seal when closed to protect the ignition switch against contamination.