Used to transform your rear turn signals into running; brake & turn signals. Choice of 10 user selectable built in brake light strobe/flash patterns (user can also select no strobe/flash on brake). Additional functions include selectable running light intensities to match the running light brightness of turn signals to center taillight. Ability to apply brake strobe/flash patterns to center taillight only; rear turns only; or rear turns and center taillight. Built in SMART function which allows normal turn signal flash to override the brake strobe/flash when simultaneously braking and turning. Choice of 10 user selectable built in brake light strobe/flash patterns (user can also select no strobe/flash on brake). Additional functions include selectable running light intensities to match the running light brightness of turn signals to center taillight. Ability to apply brake strobe/flash patterns to center taillight only; rear turns only; or rear turns and center taillight. Built in SMART function which allows normal turn signal flash to override the brake strobe/flash when simultaneously braking and turning. Works with LED or regular incandescent light bulbs. Alarm friendly. Note: Does not need a load equalizer. Note: Compatible with CAN-bus wiring system. Note: Fits US H-D models only.