This is a pure one-to-four/one-out-of-four junction box hub with an LED light fuse holder for car audio amplifier modification. Its design is ingenious. The built-in LED light allows you to clearly understand the working status during use, providing you with intuitive visual feedback. It has wide applicability and is compatible with all car models. The matching relationship is original equipment. No matter what kind of car you have, you can easily install and use it to meet your needs for car audio amplifier modification. This junction box hub can effectively solve the line distribution problem during car audio amplifier modification, 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, then it will be your ideal choice. 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 various regions. At the same time, it has an authorized self - owned brand, ensuring the product quality.