Why need hid parts ( hid accessory ) ?

    When installed hid on cars , sometimes need speical hid part , accessory to solve troubles, so we create this list of hid parts.
    We are expert on hid and strive for providing as much as hid parts for customers solve any problem, although they are just used for typical situation , we put those in this catalog to help each one. 
    If you know it with confidence , please feel free to buy it . If not , better ask use how to use before buying .