Abstract: A headlight switch can engage an ignition switch to prevent the removal of the ignition key when the headlights are on, the headlight switch may be mounted in a downward slanting manner to engage the ignition key or the headlight switch can form a partial ring with a bottom narrow gap to hinder turning of the ignition key or grasp of the ignition key while the headlights are in the on position. Where the ignition switch is mounted on the steering column of the vehicle the partial ring headlight switch can be mounted thereon or where the headlight switch is on the dashboard a solenoid control catch and latch mechanism mounted in a partial ring can remind the operator that the headlight switch is pulled in the on position.