LED WARNING INDICATOR Red LED warning light light up immediately when the corresponding fuse is blown. The waterproof fuse block indicate exactly where there is a short circuit or any other fault it is both safe and easy to check and replace the blown fuse. SAFE MATERIAL FUSE BOX Made of environment-friendly PBT material, boat fuse block meets all the standards of an perfect marine fuse box. It is mechanically strong, insulated, heat resistant, and flame resistant. There hardly cause any issue like produce fracture, deformation, combustion, or short circuit phenomenon. MAKE WIRES ORGANIZED Instead of piling a mess of wires and marine fuse block onto your battery posts, a 12v fuse block/ground bus kit gives you 12 dedicated fuses and 12 ground locations to keep all of your wires clean and organized. Made wiring electronics in your vehicles or boat a breeze. UNIVERSAL PROTECTION Whether you're building a massive overland lighting setup or adding power to your classic. marine fuse panel