Originally Posted by Scott@Synergy

Really? They're male/female electrical connectors. You don't think that switch has that big flat brass with a hole just to have a wire passed through do you? Wire goes into the connector and the connector goes onto the brass. The hole is there because the female connector has a bulge kinda that locks into that hole. That way the connector won't come off with vibration. And for arch issues they're covered in a plastic shield.