Prevent bulb out dash warnings or flickering by using these harnesses. Our “All In One” harnesses are the highest quality solution on the market for normal or complicated electronic situations. For use with LED headlight and fog light bulbs that deploy CANbus and PWM. These decoders install quickly by plugging the harness module into the vehicle headlight connector. These harnesses have been tested for compatibility in Dodge, Chrysler, Jeep, VW, BMW, Audi, Mercedes-Benz and many other CANbus system currently in use.