zmart H4 to HB Conversion Simultaneous 2 Sets of Wire Plug Connector Hi/Lo Harness, 4-Light Lighting, Headlights, Adapter, Harness,

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Bring a slice of Japan into your home. Enjoy browsing and have fun shopping with us! ★★★★★★★★★★★ This is a conversion harness from H4 to HB. Set of 2. The separate female connectors are HB3 and HB4. The H4 has many wiring patterns. Broadly speaking, there are negative control vehicles and positive control vehicles. This is a conversion harness from H4 to HB. Set of 2. The separate female connectors are HB3 and HB4. The H4 has many wiring patterns. Broadly speaking, there are negative control vehicles and positive control vehicles. Negative control vehicles in particular have many wiring patterns. To make them light up simultaneously, please refer to the wiring of someone who has successfully converted four lights to HID on the same model of car.