Waterr proof charge jack..... I always mount the switch inside the fuse with a rod to push it on or pull it off.. The Du-bro switch mount is perfect for this.. But the charge jack is mounted outside with an Ernst waterproof one....If you have wigs that take a little time to disassemble, then this charge jack is the way to go.....Its got a little rubber plug that seals off the opening to the recepticle... Anyways that was my 2cents Canadian or 1.4cents US....