I ride a Lifan 250-4 (parallel-twin). In Germany, this bike is very rare. I have problems with the fuel gauge. When I turn on the ignition, I see two red lights below. In addition, there are three green lights that disappear after a short time. It makes no difference whether the fuel tank is full or empty. I have removed the fuel tank and the electrical connections checked. The plugs and cable seem to be in order.
What is the cause of the error. Does anyone any advice?