where do i find old tube car radio schematics?

[Lingwendil]

Does anyone know where i could find some circuit diagrams on older tube based car radios? I just got a 58 beetle and wanted to try something eccentric for the sound system...

 

[Tom Bavis]

It may be listed in Sams Photofacts or their AR (auto radio) series. Need make and model number though... VW radios were dealer installed in '58, if I recall correctly, and there were many possible radios...

 

[DigitalJunkie]

I think I saw a couple schemas while I was browsing last night. None of them were VW tho.
http://www.audiophool.cjb.net/MadeInRoch.html