Features: Adopt 80A waterproof relay and high temperature fuse-box, double circuit push cabinet filament 100W / 140W connection terminal, through anti-corrosion tinning-treatment, prevent the occurrence of poor contact, adopt high heat resistance cot bellows and n66 material socket not to dissolve. Improve the brightness of the headlight, for the old vehicle light can improve about 30 ~ 50% brightness. Protect the original vehicle line, the original vehicle line and electrical parts will not be burned and damaged due to excessive current. The power can be increased to 100W, especially for the vehicle modified with 100W bulb. High temperature and high-voltage protection wire, copper ceramic-lamp holder! After the product is installed, the headlamp brightness of the vehicle can reach the standard. It is easy to install and can be assembled directly without changing the original line. It is practical and-versatile. Any vehicle can be assembled directly. It will not affect the vehicle itself. Specifications: Material:Plastic Short Line:Approx.40cm15.74inch Long Line:Approx.160cm/62.99inch Suitable for 12V H4 bulb Assembly method-and method: 1. Before assembly, it is necessary to check whether the working-voltage of the vehicle is 12V; the product with 24V voltage-cannot be installed and used 2. The power red-ine of the brightener is directly connected to the positive pole of the battery, and then the two headlamp sockets are removed. One end of the original car-is connected to the brightener socket, and the other end is empty Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Wiring Harness Kit