How to mend Delco Cdr 7

Wiring diagram for 12 volts and speakers?

code for cdr500 DELCO?

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delco wiring diagram?

delco cdr 500?

my Delco cd player, wont play my cds, just ejects and says "error"?

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CODE?

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code for delco radio?

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code for cdr500 (d) DELCO?