WORKS WITH REAR FENDER LED BRAKE LIGHTS ONLY - Custom Dynamics Magic Strobes Brake Light Flasher with 10 Strobe Patterns Features: Applies brake flash/strobe patterns with Custom Dynamics Rear 1157 LED bullet style run, brake, turn signals & LED Squareback or Laydown rear center taillight (does not flash Tour-Pak). Unit also allows Fillerz to flash/strobe when functioning as Run/Brake/Turn. NOTE: To provide clear signals, normal turn signal flash will automatically override the brake flash/strobe when simultaneously braking and turning. Over-current/thermal/short circuit/reverse wiring protection. 84W, 12V system. Sealed weather-tight case. WORKS WITH LED's ONLY Plug and play installation for 2014-2025 Harley Touring Models with LED Brake Lights (See Fitment Below.) This unit is not compatible with Harley aftermarket dual intensity Tri-Bar or Tour-Pak. Patterns: Pattern 0: Four Flashes then Solid Pattern 1: Four Flashes, Solid for 3 Seconds, Repeat Pattern 2: Seven Flashes then Solid Pattern 3: Seven Flashes, Solid for 3 Seconds, Repeat Pattern 4: Quad Strobe, then Solid for 1 Second then Quad Strobe Pattern 5: Quad Strobe, Solid for 1 Second, then Quad Strobe, Solid for 3 Seconds, Repeat Pattern 6: Blaster X Pattern for 6 Seconds, then Solid Pattern 7: Custom LED Blaster X Cycle, Repeat Pattern 8: Max Strobe 4 Seconds, Solid Pattern 9: No Pattern Finish: Black Dimensions: Length - 4.2" Width - 1.4” Height - .6" Fitment: Plug and play installation on 2014-2025 Street Glide, Street Glide Special, Road Glide, Road Glide Special, Road King Special applies brake flash/strobe patterns with Custom Dynamics Rear 1157 LED bullet style run, brake, and turn signals. This unit is not compatible with Harley aftermarket dual intensity Tri-Bar.