12V H4 Negative-Switched LED Headlight/Lamp Bulb Relay Wiring Harness Plug Kit

Features:\n1. Enhance Headlight Brightness: The headlight relay wiring harness is designed for 12V H4 light bulbs and can increase the brightness of old vehicle headlights by approximately 30-50%, eliminating concerns about damaging the original vehicle wiring when using 100/90W bulbs.\n2. Protect Vehicle Wiring: This car LED headlight relay wiring harness kit features independent power supply to safeguard the original vehicle wiring. With an 80A waterproof relay and high-temperature fuse box, it effectively prevents overheating and corrosion, ensuring the longevity of the headlamp socket modification parts.\n3. Easy Installation: The light bulb socket plug kit can be easily installed without the need for any modifications to the original vehicle wiring. It is a practical and versatile solution that can be used on any vehicle without causing any adverse effects.\n4. Ensures Compliance with Vehicle Regulations: After installing the headlight enhancer brightener, yo;