Please make sure you have disconnected the Aux input cable from the WR383R.
No, The solar panel will only provide enough power to operate charge the internal battery of the main unit.
Yes. In cases of emergency the Dynamo will provide 5 volts of power provided the handle crank is turned twice every second.
Due to the variation from manufacturers for the "AA" cell batteries we recommend the use of Duracell batteries with this product.