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Simple Light Chaser I Circuit Diagram. Chase lights (or chaser lights) are often associated with the marquee signs of some movie theaters, and have also been used as a common element of television. Light Chasers is an album by Cloud Cult.In this schema Up to 100 lights, LEDs, or optocoupler triac diagram can be sequentially activated by this schema. One (Ul) 4017 decode counter sequences 10 LEDs whose common anode is returned through a second (U2) CD4017, which counts at one-tenth of the rate. The flash rate is controlled by U3, a clock schema, with a 555 timer. View:  Artificial random Simulated Flicker Sequencer Circuit Diagram