Quickly diagnose blown fuses with the MGI SpeedWare Automotive Fuse Tester. Designed for both 12V and 24V systems, this compact, easy-to-use tool helps you identify faulty fuses in seconds. Whether you're working on cars, trucks, RVs, or boats, this fuse tester supports all major blade fuse types including ATO, ATC, ATM, and MAXI. An integrated LED indicator instantly lights up to show fuse continuity, saving time and eliminating guesswork. A must-have for mechanics, DIYers, and anyone managing automotive electrical systems.