100HD-M unit is designed to handle up to (4) tail light bulbs - for newer BMWs (EVO equipped), Yamaha (ABS equipped) and newer Harleys.
100HD-M has a built-in ballast to allow continuity during the flash mode. It has a high-side interrupt circuit to allow flashing of the bright brake filaments. This makes it easy with a just a single wire splice.
100HD-M unit fits in the tail section or under the seat.
When you apply the brakes the brake light will modulate rapidly at first then slow down to a solid ON over a period of (4) seconds.
There is no sacrifice to the life of your bulb because tailBlazer utilizes a soft-switching technology. Soft-switching is a technique which throttles the current flow through the bulb filament, so that there's no "thermal shock" - as opposed to a sudden in-rush of current, which can damage the bulb filament or shorten it's life considerably. This is far superior than maintaining a small voltage!
The internal circuitry is being controlled by a microprocessor, which allows precise flash patterns, overload detection and reverse polarity protection.