Answer: The light bar is cut at 5CM, and each 5CM has a black line. The series-parallel circuit will be cut along the black line, so that it will not be off.

Answer: The light bar is designed on the principle of series and parallel. One resistor for three LED strings. Then all the nodes are connected in parallel. The resistor and LED are matched scientifically and reasonably. The whole meter is the highest configuration for photoelectric conversion.