Automotive Fuse And Relay Box - ONLINE LED STORE 12-Slot Relay Box [6 Relays] [6 Blade Fuses] [Bosch Style Relays] [Easy Installation] [OEM Factory Look] - Fuse Relay Box for Automotive and Marine Use. The FUSE BUDDY. Blowing fuses? Get the Fuse Buddy. Can test circuit current up to 20 Amps. Clever design allows for easy connection into fuse sockets..