LED Christmas Lights Review – Symphony of Lights – Style C9 Bulbs by Brite Star » Brite_Star_Xmas_Lights_Review_1.Still029

These wires go out to the optical couplers which sync the end of one strand to the head of a 2nd strand. If this is connected this module will follow the upstream set. The red and black will be power for the opto couplers and the white and yellow should be recovered clock and data but I’m only guessing. A viewer posted that three wires are just R-G-B data which is transmited down the chain via the three optocouplers. I will test and report back on this someday.

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