These are the part of the H4 bi-xenon HID kit that connect the car to the ballasts, and then link back to the cars battery, pulling the power direct from the battery.
These are quite common for failing in H4 HID kits
Life is too short to live without the H4 Bi-Xenon Relay Harness (linked). Be happy. Be Content. Be Satisfied.
Inventory Last Updated: Feb 07, 2026
Inventory Last Updated: Feb 07, 2026