When you install the HID on some car, and the computer alarm (or digital control such as some new BMW) noise, the light flash and flick continue, try a condensator on it to solve this,  some condensator can only use for specail car series

Just like: OPEL, BMW3, BMW5, some of Benzs...

If you are not assure which condensator you need, tell us your car brand and model than we get the right condensator for you