I want  to obtain a engine manual and wiring diagram for a 1999 Australian
Winnebargo classic motorhome with a  230 H.P Cummings Motor and
Spartan chasis.

Hello Heytesbury-ga,

You can obtain a manual and diagram for your 1999 Australian Winnebago
by sending a check or money order for $19.50 to:

Winnebago Industries
The Motorhome People
PO Box 420
EMU PLAINS NSW 2750 

Please make sure to include the serial number of your vehicle and your
request for both items.

This information was taken from the cached version of the
Winnebago.com.au site's FAQ's.

http://216.239.51.104/search?q=cache:qan7thHTXpAJ:www.winnebago.com.au/faq.htm+winnebago++manual&hl=en

If you live in Australia or don?t mind making an international call,
you can also contact them about the manual at:
Winnebago/Freeway Spare Parts 
02 4735 8116 
Monday-Thursday 0700 to 1530 
Friday 0700 to 1300 EST

They will need the serial number for your model.
You can find the serial number on the exterior right hand side of the
entry door. You may also find the serial number on the Carrying
Capacity label in the main wardrobe cupboard. When calling or writing
Winnebago, please refer to the serial number.

I found this information with a Google Search for 
Winnebago manual
://www.google.com/search?num=100&hl=en&lr=&ie=UTF-8&safe=off&c2coff=1&q=winnebago++manual&btnG=Search


If this answer requires further explanation, please request
clarification before rating it, and I'll be happy to look into this
further.
Nenna-GA
Google Answers Researcher

Thank you

YOU MIGHT TRY CALLING WINNEBAGO.  THIS NUMBER IS FROM THEIR WEBSITE
Note:

 If you own one of our motor homes and have a question about it, we
encourage you to contact us by phone. We find phone communication
allows us to more quickly resolve your issue. Call our owner relations
department at: (800) 537-1885.

This number listed in the above comment is for the American Winnebago
Company. The Australian Winnebago Company is not affiliated with the
US company according to the US company's customer service
represenatives.

Thanks for the help though :)

Nenna-GA
Google Answers Researcher

All of this is kind of funny. I just got back from a fishing trip and
had this e-mail waiting for me. It is from Winnebago Australia.
Someone is wrong and I don't think it is me.

Dear Heytesbury,
                            Thank you for your email enquiry.Sorry, we
don't keep copies of the engine manaul though if you approach Cummings
direct they should be able to assist. The contact phone # 02 9636
5300.
We cannot assist you with a wiring diagram of the motorhome, as all
units are wired the same unless special fittings are required,
consequently we don't need a diagram for our use.
Regards, 
 
Don.

????? Redhoss