If memory serves they have a sealed fuse block no? I remember working on something Kawi in the runabout class that had a sealed fuse block, and I mean sealed as in the entire block is encased in an external shell, you pop the top to see the fuses and the whole block can be removed from that shell. But it was the same deal, it took me forever to figure out that the entire fuse block needs to be fully dismantled, clean the corrosion in the subplates and reassemble coating everything in a thin layer of dielectric grease. You wouldn't know it was corroded to see the fuses or the tabs they push into, you have to get below those tab slots and underneath is where the corrosion is hiding.