Hurricane Electrical diagram
I don't have electrical diagrams for the coach you mentioned, but I do have some experence ... Take a volt meter, put it on the engine batteries as in a 12 volt configuratrion ... take a reading .. if batteries are charged it will be at 12Volts .. if they are discharged, then it will read what ever .... start the engine, take the same reading again ... it should now read 13.5 volts, or there abouts .... if the voltage has not changed with the engine running, then you may have a bad alternator. If the voltage is at 13.5, and you still have a battery issue, then you could have bad batterys,bad diodes on the alternator, or someother drain on the batery when the engine is turned off ....
hope this might help ...
Dave