Hello, the Red cable will activate the flashing mode (primary/secondary/multicolor flash patterns). Cycle patterns by tapping the Yellow cable to Red. The Green cable will activate the Z Surface Mount in steady burn in the secondary color so you could hook that to your turn signals if you would like the unit to activate with your signals. Check out our Surface Mounts here: www.speedtechlights.com/LED-Grille-Surface-Mount-Lights Use our LiveChat feature to talk with our customer service team and we can help you get set up for the application you are needing.