the tail lights in my 66 just began malfunctioning. the right brakelight stays on continuously, even when the car is off. however, when the car is off i can turn on the right turn signal which shuts the brake light off so the battery doesnt run down. the left tail light does not show any brake lights at all, but does light when the turn signal is applied and when the headlights are on. so my basic problem is that my right brake light stays lit and the left brake light doesnt lite at all. any ideas? could it be as simple as replacing bulbs?