... 1)connect H4 hid lamp with ballast 2) UL certificate HID Relay Harnssuse for H1,H1 Metel, H3, H4-1L,H4-2H, ... 9005, 9006,9005/9006 bend, 9007, 880, 881, H4 Halogen-Xenon, 9004 Halogen-Xenon, 9007 Halogen-Xenon, H13 ... to get enough power for some cars to install hid kit on.Details: Auto Relay harness are used ... as the auto HID kits wire harness, which help to get enough ...