Amazon: h13 hid relay harness Amazon: h13 hid relay harness. Skip to main content. Try Prime All O-NEX HID Relay Harness 9006 9005 9145 40A 12V 35W/55W Heavy Duty Xenon HID Wiring Upgrade Kit. 3.5 out of 5 stars 7. $8 $ 8. 75. Get it as soon as Mon, May 20. FREE Shipping on orders over $25 shipped by Amazon. 9008 (H13) Headlight Heavy Duty Wiring Harness Upgrade Easy to install, this wiring harness will supply battery voltage or more to your headlights. This extra voltage will give you brighter, whiter headlights. Simple plug and play installation using factory style connectors. These are equipped with 2 heavy duty relays and a fusible link for safety! Will NOT work with Daytime Running Lights!