Fuse adapter for ATO/Midi fuses. Used when there are few available fuse slots in the fuse box, or if you want to easily disconnect a load without modifying the vehicle's electrical system. Installation and Usage: Remove a regular fuse with the desired fuse rating (up to 10 A). Insert the fuse adapter. Place the regular fuse back into the holder closest to the fuse box. Connect the cable to the device that needs power. Insert a fuse for the new device into the fuse adapter.