1. Material: PVC + metal 2. Wire gauge: 16AWG 3. Installation type: plug-in type 4. Number of pins: 3 5. The function is to provide a stable and safe electrical interface for connecting H4 type bulbs to the vehicles electrical system 6. Product application: Suitable for bulbs with H4 HB2 9003 light source 7. Product wiring instructions: - Red wire: high beam - Black wire: ground - Yellow wire: low beam 8. Designed specifically for H4 bulbs, the three pins ensure the integrated control of high and low beams, with good compatibility. 9. Can directly replace or upgrade the car headlight light source 10. H4 standardized interface, easy to install and remove quickly, without professional tools or complicated operations 11. The ceramic material socket has high insulation, which can effectively prevent current leakage, ensure the safety of electrical connections, and reduce the risk of short circuits or sparks 12. Dimensions: 19x2.8x2.6cm 13. Net weight: 110g
