Dynamic Clusters2 from Custom Dynamics are multi-function LED Clusters used for rear turn signal applications. The inner ring contains Amber or Red LEDs while all outer LEDs are dual intensity Red. The Amber/Red version has an 1156 base connected to the amber LEDs for turn signal while the dual intensity red LEDs are connected to a 3′ wire pigtail and are recommended to be used behind a clear smoke lens. The red/red version has an 1157 base which allows the outer ring to function too as a running light ad the inner circle to function as brake/turn.
1156: Direct replacement for rear turn signals on Harley-Davidson® models with 1156 single contact bulb bases and Bullet Style (pop-off) lens. US models with center taillight.
1157: Plug & Play on Harley-Davidson® models with rear 1157 dual contact bases and Bullet Style lens. US models without center taillight.