This product can make your car lighting system more pleasant, it can upgrade your headlights’ brightness, which makes you have a clearer and wider vision when driving at night. We can supply you with many types and you can choose form them to equipment your car. 1)Applicable for both positive and negative poles 2)Needless to change original light wire system and bulbs 3)Good light gathering and piercing power, enhance the brightness, has the effects of HID 4)Has the protection of soft startup and can prevent your bulbs form broken when the voltage suddenly changes 5)Has the function of protecting the situations of low voltage, over-heat and short circuits 6)Ceramics socket and corrugation bushing 7)12V and 24V.