The Tri-Star module converts the rear turn signal lights to function as brake and turn signal lights. When the brakes are applied, the turn signal lights illuminate. If a turn signal is applied, it has priority over the brake light function on the side that is selected. If the turn signal is canceled and the brakes are still applied, the brake light function of the turn signal lights illuminate steady on.
Features:

• Adds brake light function to existing turn signals
• Weather proof solid-state electronic components.
• Dimension: 2 1/4 L x 1 5/8 W x 5/8 H
• Mounting: Secure to flat surface with double sided VHB tape (included).
• NOTE: If your bike does not have a variable load turn signal flasher, a Dual Load Equalizer will be needed for this installation.