10A. JAPAN BUILT. W/PRIME PLUG-IN. A electrical safety device that removes electrical current from an electrical circuit when the current in the electrical circuit is too high. Fuse Kit. and Amplifier; relay box. Multi - Purpose. Included with: Computer Order by quantity and Amperage, Engine room wire harness, Fuse & relay box, Fuse & relay box upper cover, Fuse and relay box, Fuse box upper cover, Fuse holder, Junction block, Junction block Order by description, Junction block Order by quantity and Amperage, Junction block Order by quantity & description, Junction box, Main Fuse box, Main relay block, Upper cover.