I'm a new boat owner and my first foray into boat electrics was to try to install a battery voltage monitor. Got everything seemingly working fine until heading in from sailing and started switching on navigation lights and the (inboard) engine. Whiteish smoke started coming from below the cockpit so I go below and turn the battery switch off. Upon closer inspection, the insulation around the wires was burned through (significantly) in some places. I had the service place I am storing the boat at take a look and their diagnosis was that it is a 'short to ground' and would require running new wires 'from the circuit board up'. Anyone have any experience with this kind of issue and ideas what the cost would be? I suppose some new wiring wouldn't be the worst thing. Any advice is appreciated. Thanks.