Custom Dynamics Mega Plasma Rod Priority patented LED technology that produces a bright, incredibly smooth light output, unlike anything you have seen before. Features: Single-intensity two-wire design Work on all 12Vdc negative ground systems Can be used about anywhere but work great as turn signal or brake lights located between your bags and your fender/filler panel or as a third brake light located under your tour pak Use one of a custom dynamics run-brake-turn controllers to allow your plasma rods to function as running, brake and turn lights, needs 138-447 Measures 8 x 0.3 x 1 and mount with 3M automotive grade tape (included)