Charging

[nickodemon]

I agree with the above comments, but the most likely issues are either the ignition connectors you have been near or the white connector which is well known to corrode. To locate it take off the left hand side fairing infill and raise the tank. Follow the cables from the reg rect to the white connector. Pull it apart. Push the connector in and out several times to remove corrosion and then smother it is silicone grease and reconnect. Hopefully that will solve the issue. If it doesn't you will have to cut the wiring and fit new connectors.