Hello, I have a 1985 corvette coupe and the blinkers work only when the head lights are off check all bulbs and fuses they were ok. changed the turn signal flasher and hazard warning flasher and I still have the problem. I do have the left turn signal light on the instrument cluster that stays on which indicates that there is a bulb burnt out on the driver side. I did notice that the side marker lights on the rear of the car are not on would that be were my problem is?