Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

12-pin Connector 4, CD Changer (R41)/External Audio Source Connection (R199)/Multimedia System Control Module (J650)







12-pin Connector 4, CD Changer (R41)/External Audio Source Connection (R199)/Multimedia System Control Module (J650)






1. Left audio input (+) to External audio source connection/Multimedia system control module

2. Audio input ground External audio source connection/Multimedia system control module

3. Audio ground from the CD changer

4. Terminal 30 to the CD changer

5. Not assigned

6. DATA OUT to CD changer

7. Right audio input (+) External audio source connection/Multimedia system control module

8. Left audio from the CD changer

9. Right audio from the CD changer

10. Control signal to the CD changer

11. DATA IN from the CD changer

12. CLOCK from the CD changer