This example illustrates how to make Christmas lights chase using a 3 track lighting controller.
Fig 1. Three separate strands of lights are laid out next to each other. The lights are 1 foot on center. The three strands are offset 4 inches and wire tied together.
Fig 2 is a completed set of chase lights. The example animation below shows the turn on sequence.
Note: It is usually best to use the same color bulbs for chase lights. We used different color bulbs to make the example more obvious.