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 24v H4 Bi-Xenon Relay Harness (linked) is the product you didn't think you need, but once you have it, something you won't want to live without.
Inventory Last Updated: May 16, 2024
Inventory Last Updated: May 16, 2024