Pure copper wire, conduct current safely.
High-quality relay ensures safety of the hardness.
Ceramic lampholder, high temperature resistant.
The harness fixes dim headlights, back feeding power, flickering headlights, malfunctioning headlights when using hi/low beams, overloading the headlight switch, overheating plugs.
Suitable for H4 / 9003 headlights of all car.
The relay wiring harness connects with H4 headlights to fix problem of dim headlights.  Features: Pure copper wire, conduct current safely. High-quality relay ensures safety of the hardness. Ceramic lampholder, high temperature resistant. The harness fixes dim headlights, back feeding power, flickering headlights, malfunctioning headlights when using hi/low beams, overloading the headlight switch, overheating plugs. Suitable for H4 / 9003 headlights of all car. Specifications: Material: Plastic + Ceramics Voltage: 12V Connector: Ceramic plugs Short Cable Length: 400mm / 15.75in Long Cable Length: 1600mm / 62.99in Package Weight: 320g / 11.29ounces Package Size: 170 * 115 * 70mm / 6.69 * 4.53 * 2.76in Packing List: 1 * H4 Relay Wiring Harness