Delco am/fm cassette part diagrams?

Hello could someone post a link to any general or all car 'Delco' am/fm cassette player internal "parts Diagrams"??
Or if someone could email me the .pdf file of any general Delco am/fm cassette player showing the internal 'parts diagram' of any model??

But my part# is 16123323 and i have this in my
1991 Oldsmobile 88 Royale Brougham.

I need help urgently, and desperately!

sincerely,
Paul Naegle :)

The only way to possibly access that info is by either going to your local Olds dealer and asking the "parts dept.", or finding an automobile radio repair place and asking them for a copy of such a diagram. Goodluck....