H4 40Amp Full Relay Kit

H4 40AMP Full Relay Wiring Kit – Heavy Duty Headlight Harness

Upgrade your headlights with confidence!

This H4 40AMP Full Relay Kit is a heavy-duty wiring harness designed to deliver more power directly to your headlight bulbs while protecting your vehicle’s original wiring system.

✅ Product Features:

• Compatible with H4 Headlight Bulbs (Dual Beam - High & Low)
• Heavy-Duty 40AMP Relays for reliable performance
• Pre-wired Plug & Play Design – easy to install, no cutting required
• Prevents Headlight Flickering and voltage drop
• Improves Brightness by providing direct battery power to bulbs
• Built-in Fuse Protection for extra safety

🔧 Technical Specifications:

• Supports halogen and LED H4 headlight bulbs
• 100% copper wiring for better conductivity
• Heat-resistant and water-resistant connectors
• Relay Rating: 40A / 12V DC
• Fuse: Inline blade fuse for overload protection

🚘 Compatible With:Most vehicles using H4 headlight sockets – including  cars, SUVs, and trucks.