An H4 HID kit wiring diagram is a technical schematic illustrating the electrical connections required to convert a standard dual-filament H4 halogen headlight system to High-Intensity Discharge (HID) technology.. In this guide, we'll show you what's included in your H4 Xenon HID headlight bulb conversion kit, how it all fits together, and how to install it with and without the Xenon HID warning cancellers (anti-flicker). Bulb H4 is the same as 9003 and HB2. This installation guide applies to these bulbs as well.
![[DIAGRAM] H4 Headlight Diagram](https://kensunhid.com/image/catalog/diagrams/dbBiXenonWithResistors.jpg "[DIAGRAM] H4 Headlight Diagram")
![[DIAGRAM] H4 Headlight Relay Wiring Harness Diagram](https://images.octanelighting.com/images/4850-4x6-4headlight-relay-harness-cec/4850-4x6-4headlight-relay-harness-cec-07.jpg "[DIAGRAM] H4 Headlight Relay Wiring Harness Diagram")
![[DIAGRAM] H4 Hid Diagram](https://cdn11.bigcommerce.com/s-3367ga5x/product_images/uploaded_images/9005-hid-with-relay-connection-diagram.jpg "[DIAGRAM] H4 Hid Diagram")
![[DIAGRAM] H4 Bi Xenon Hid Wiring Diagram Ford Probe](https://img1.wsimg.com/blobby/go/b1137b60-99e3-4974-b28a-973388b94a37/downloads/1c72124ba_948092.png "[DIAGRAM] H4 Bi Xenon Hid Wiring Diagram Ford Probe")
![[DIAGRAM] Hid Relay Wiring Diagram Resistor](http://hidny.com/images/RelayHarnessResistorsDiagram.jpg "[DIAGRAM] Hid Relay Wiring Diagram Resistor")
Find comprehensive installation guides for HID and LED lighting kits, including auto lighting guides and troubleshooting tips.. Learn how to wire a H4 headlight bulb with a detailed wiring diagram. Get step-by-step instructions for a proper installation.