12-Pin Connector 4, CD Changer Control and Audio Input Signals
1 Left input AUX signals
2 AUX signal ground
3 CD changer, audio signal ground
4 CD changer, voltage supply, positive, terminal 30, contact continuous power handling greater than 1A, short-term peak power handling 5A
5 not used
6 CD changer, DATA OUT (data exchange for CD changer control from the radio navigation system to the CD changer)
7 Right input AUX signals
8 CD changer, left port audio, CD/LA
9 CD changer, right port audio, CD/R
10 CD changer, control wire, switched positive
11 CD changer, DATA IN (data exchange for the CD changer control from the CD changer to the radio navigation system)
12 CD changer, CLOCK (internal test protocol for monitoring data flow)