Thunder Heart Performance Center Brake Light Module Features Want to install a center brake light on your custom bike Thunder Heart has you covered with this Center Brake Light Module Incorporates turn signals, running lights, and brake lights into two rear bulbs Simplifies the rear lighting popular with today's custom bike builders Allows the addition of such lights when using the Micro Harness Controller Compatible with both LED and incandescent bulbs Solid-state construction is fully circuit-protected and has no relays to wear out Compact 2 x 0.6 x 0.5 size means you can hide it just about anywhere Simple four-wire hookup and included wiring diagram make installation a breeze