Kisan tailBlazer 20W-S2Pak - Synchronized units for (2) single-contact bulbs&nbsp;CAN-bus Z-version Hybrid electronics plug-n-play - simple bulb replacement Dual function circuits - intensity control for tail & brake function Deceleration flash - exponential decay over 4-Sec LED option - replaces G4 Halogen bulb element Low cost version - single wire ISO-tap hook-up Designed, developed and assembled in USA