“This is a great product with all leds, wires and a controller. I put a navigation light and a strobe light in each wing. In order to save wiring I combined the two black wires and ran a 3 wire servo connector out. 1 ground, 1 hot for the nav and 1 hot for the strobe. I split them back out in the fuselage to the controller.That does not work because the grounds are not common on the control board and you must keep the grounds separate. Small issue, but I am glad I have not covered the wings yet.”