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: 4.2″ L x 1.4″ W x 0.6″ H.