A. This is a pure one-in-four-out junction box hub with an LED light fuse holder for car audio amplifier modification. It is ingeniously designed, and the built-in LED light allows you to clearly understand the working status during use, providing you with intuitive visual feedback. B. It has wide applicability and is compatible with all car models, with a matching relationship of original factory specifications. No matter what kind of car you own, you can easily install and use it to meet your needs for car audio amplifier modification. C. This junction box hub can effectively solve the line distribution problem during the car audio amplifier modification process, helping you arrange the lines more reasonably and making the modification process more convenient and efficient. If you are troubled by the line problems of car audio amplifier modification, it will be a good choice. D. It is suitable for multiple sales regions, including Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East, and is well - received by users in each region. Meanwhile, it has an authorized self - owned brand, which ensures the product quality.