Review on 🔋 Ampper Battery Switch: Efficient 12-48V Battery Cut Master for Car, Vehicle, RV & Boat (On/Off) by Mark Bearden

The thing is complete garbage. The small installation brochure is illegible, even if you photograph it with a 12x camera and zoom in, you cannot read anything. I kept getting a spark thinking maybe the contacts were a certain polarity so I swapped them. No, it still sparkles. I was then able to read that there is a tab for entry and one for exit. Lined up the inlet on one tip and the outlet on the other and it blew out the fuse I had in place. Eventually I pulled out my tester and sure enough, no matter how it was set up, the currents crossed. You owe me $20 for my blown fuse and you take this piece of junk.