Smoking Renault Clio?

My Renault Clio started to smell of burning when I turned it on. As I drove, it got much stronger and smoke started to pour from the dashboard. I turned it off and checked under the bonnet, it does not seem to be the engine and appears to be some kind of electrical fault. When I turned the car back on the fuel claimed to be at zero and the light was on, even though I know the tank is full. Fuel gauge electrical problem of some kind I assume. Any advice on fixing this?