Search This Supplers Products:car led headlightled work lightled light barHID Xenon Kitscar logo lightcar music light
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How does this stuff work together?
Let's look at the diagram from left to right. When you turn on your headlight switch, it puts 12V across the relay coil which in turn closes the contacts. The contacts switch in 12V from the battery to turn on the ballast, which in turn ignites and powers the HID bulb. Pretty simple concept.