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
The H4 Bi-Xenon Relay Harness (linked) is far and away, one of our most popular items. People can't seem to get enough of it.
Inventory Last Updated: Feb 12, 2025
Inventory Last Updated: Feb 12, 2025