See also the related forms, Sidney (English and French), Sidney (English and French). Dennis is a classic favorite. Today it is still a fairly popular baby name for boys, though not to the extent it was in the past. Its usage peaked in 1946 with 1.299% of baby boys being given the name Dennis.
When we use the turn signal switch, it cancels the brake light signal, on the side selected. If it did not, the lights would stay on and not flash. A bad turn-signal switch may interrupt the brake light circuit when it should not. A broken wire to or from the switch may also cause the lower brake-lights not to work. The third brake light does not flash with turn signals.
The second most common reason for causing a brake light on your dash is if your brake fluid is low. There is a sensor that is inside the brake master cylinder that can tell when the fluid gets low. This sensor will illuminate the brake warning light to let the driver know that the brake system needs attention asap.