Custom Dynamics LB02 Brake Light Bar Knight Riderz Sequential/Flashing with Red LEDs Feature 12 super-bright LEDs. 3M double-sided tape for easy mounting. Work with any 12VDC system with no load equalizer or resistors required Non-sequential light bars are dual-intensity and you have a choice of flashing or non-flashing Brake alert Sequential light bar features "Knight rider" side-to-side sequencing in running light mode and a flashing Brake alert Sequential LED turn signal light bars will work with Flashers that flash between 60-120 times per second (the standard DOT rate); perfect for auxiliary turn signals