This 35W Can-bus ballast can solve error light and sound problem Of vehicles(with can-bus system) like BMW,BENZ,AUDI,.......etc This 35W Can-bus ballast can solve error light and sound problemOf vehicles(with can-bus system) like BMW & BENZ,AUDI,VW.......etc.Battery voltage : about 9V~16VInput Current : 3.4AOutput Power : 35WLight lumen : 3200 lumens (4200K Lamp)Life : 2500 hrsDC-12V vehicle use ...