I bought this kit and put it together.
http://courtiestown.co.uk/batteries/downloads/12V High Power Kit Resettable Fuse Instructions.pdf
The LED lights dimly and I get some sparking when I connect it to the battery in my van, but somehow, I can't get over the feeling that it is just "snake oil." What's the opinions here? Do any of these work? Is this one that does?
http://courtiestown.co.uk/batteries/downloads/12V High Power Kit Resettable Fuse Instructions.pdf
The LED lights dimly and I get some sparking when I connect it to the battery in my van, but somehow, I can't get over the feeling that it is just "snake oil." What's the opinions here? Do any of these work? Is this one that does?