Award Winning Patented Accelerometer Motorcycle Brake Lights Flasher Module indicates Braking from Engine Braking and downshifting. BEST MOTORCYCLE BRAKE LIGHTS FLASHER: Award winning patented design detects deceleration from all methods of deceleration. Two flash patterns indicates levels of urgency in braking. Three levels of sensitivity for different types of motorcycles. REDUCE RISKS OF REAR END ACCIDENTS: Over half of motorcycle weight is engine, motorcycles decelerates much faster on closed throttle and downshifting, conventional brake lights are not illuminated during engine braking. EXPERTS AGREE: DMV motorcycle guide and experienced rider recommend tapping your brake levers during deceleration. Vololights flashes your brake lights automatically. EASY TO INSTALL: No wire cutting required! We include posi-tap connectors that can be tapped into the license plate illumination wires. Interactive online installation with videos makes installation a snap. MONEY BACK GUARANTEE: In addition to Amazon 30 day money back policy. We offer 365 days no hassle return. If you are not absolutely in love with Vololights, just contact us for a full refund.