Mercury - 20-Amp Mini Fuse Electrical Protection Marine-Grade 8M0207797. Overview. Anyone who's spent long days chasing clean water or pushing through early-morning chop knows that it's the little things that keep an outboard running strong. A simple fuse may not look like much, but when you're miles from the dock and depending on every system to behave, you want one you can trust. The Mercury 8M0207797 20-Amp Mini Fuse delivers that kind of quiet confidence. It's the tiny safeguard that keeps y