HID Relay Harness:
1)connect H4 hid lamp with ballast
2) UL certificate
HID Relay Harnssuse for H1,H1 Metel, H3, H4-1L,H4-2H, H7,H7 Metal, H8, H9, H10, H11,H8/9/11 Bend, H13, 9004, 9005, 9006,9005/9006 bend, 9007, 880, 881, H4 Halogen-Xenon, 9004 Halogen-Xenon, 9007...