cambria

I have been searching for the last week looking for a radio wiring harness for a Blaupunkt Ventura CD 83. I started with Blaukunkt in Chicago, they said parts for this radio are no longer available. I have searched hundreds of web sites and have also visited my local Blaupunkt service and repair shop. He has in turn checked with his suppliers and his own boxes of parts and connectors, all with out any luck.
Does any one have any suggestions as to where to look?

Thank you in advance for your help.

Terry