Premium H4 Wire Harness with Relay for Vehicle Lights
Crafted from high-quality copper wiring for superior conductivity and heat resistance, ensuring long-lasting performance even under heavy use. Features a durable PVC insulation layer that resists abrasion, oil, and extreme temperatures, making it ideal for both cars and motorcycles. Plug-and-play design with precision-engineered connectors for seamless installation—no modifications needed, perfect for DIY enthusiasts and professionals. Integrated relay reduces voltage drop, enhancing brightness and lifespan of H4 bulbs while protecting your vehicle’s electrical system. Ideal for upgrading headlights, fog lights, or auxiliary lighting in cars, trucks, ATVs, and motorcycles. Exclusive bulk pricing available—global wholesale supplier with unbeatable low costs for large orders.