VDO CD571x question

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StescoG66

Original Poster:

2,211 posts

150 months

Thursday 4th August 2022
quotequote all
Wonder if we have any car audio experts on here that can help with a little query.

I have a VDO CD571X head unit that I have pressed in to use in my Alfa Sprint. This unit dates - I think - from the late 1990's/early 2000's. It has the usual standard ISO connector in the back plus the mini-ISO pins for auxiliary services, amongst which is CD changer control. I have no manual for the unit, so does anybody know
a- How to select CDC as a source as I cannot see an obvious way to do it, because..............
b- I have bought a bluetooth adaptor to connect to the mini-ISO where the CD changer should connect to. Does anybody know the pin configuration of this unit so I know what pins to connect to? There are only 5 wires on the bluetooth adaptor - 12v+, 12v-, audio ground, audio left +, audio right +. I reckon these all go in to section C3 of the mini ISO.
The adaptor powers up OK, and I can pair the phone, so I suppose I just need to know what pins the audio output connects to.
Can anybody help shed any light on this as information on Google seems scant?
Thanks in advance.