I’ve seen these things for the last few years in my 12 volt adventures, and I knew in the back of my mind they would cause me some difficulty. And the parts counter at the dealership was amazed at this weird thing i’d found. They had one, but it’s the first they’d ever heard of it.
I did a bit of research as to why a fuse would have three legs, I thought maybe this was a triumph of electrical engineering. I got the answer I was looking for, it was dissapointing. What do the oppos think it does?