Converts rear turn signals to run-brake-turn Works with LEDs or incandescent bulbs Ten user-selectable, built-in brake light strobe/ flash patterns (user can also select no strobe/ flash on brake) Ten user-selectable running light intensities allow user to match the running light brightness of turns to center taillight Ability to apply brake strobe/ flash patterns on center taillight only, rear turns only, or rear turns and center taillight Built-in short circuit protection Sealed, weather-tight case Slim line design: 4.2in. L x 1.4in. W x 0.6in. H