i was coming home at night and i ran out of gas. i pulled over and added some gas. at this time, i noticed that my taillight was not working. my brake light worked, though. So, when i got home, i looked at the bulbs in the front turn signals and the rear ones and all the bulbs have a single filament. Doesn't that mean that neither the front turn signals nor the rear signal markers are supposed to light unless we are signaling? i could have sworn that the front orange lights light all the time. Maybe i'm thinking about my road bike.