Car manufacturers using alternating current in most of new cars to extend the
lifetime of halogen bulb. HID xenon conversion kit require continuous current.
Under alternating current xenon bulbs starts flickering or not function
properly. Solution for this is the HID Error Message Canceller.
The HID Error Message Canceller also known as HID Decoder, Warning Canceller,
HID Anti Flicker Capacitor, and Canbus Killer. It is useful for vehicles that
get a ‘Flickering” or strobe effect when installing after market HID kits .
These capacitors are used in the rare case that your car does not support after
market HID headlights.
Also they will eliminate "Bulb out" warnings or "bulb failure warnings in
Mercedes, BMW and other cars.
The problems occurred in those computer-controlled vehicles.
Cars known to require this are: Chrysler 300C, Dodge Magnum, Dodge Charger and
some BMW models and Mercedes Benz (usually late models only).
Package comes with a pair.