It is a mototeck (mototech?) tail. They either stopped making them years ago, or went out of business, or both.
I had the same one, same thing happened. I just resoldered the wires back onto the circuit board. The circuit board is just held in place with hot glue. The wires don't have any kind of stress reliever on them, so when they get moved around a lot, it breaks the solder connection. I used some hot glue or tape to affix the wires to the plastic undertail material about an inch away from the lights. This way, when you move them around, you aren't tugging on the solder.