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Car Cd Player AUX input

Discussion in 'Audio' started by SilviuMerlusca, Jul 11, 2018.

  1. SilviuMerlusca

    SilviuMerlusca

    1
    0
    Jul 11, 2018
    Hello!
    My car has a head unit with a cd player but no aux input, so i found a video on youtube on how to install one, via a jack cable, but i have a problem: the pins on my head unit's motherboard are not labeled so i don't know which one is right/left channel and ground.
    The connector from the cd reader to the mother is a 14 pins ribbon.

    Can you tell me which are the pins that i need? Or how to find them?

    I attached the photos with my head unit model and the back of the motherboard.

    Here is the video:
    37000427_1794066640710073_4889879957951479808_n.jpg

    36990033_1794200564030014_126419540564246528_n.jpg
     
  2. Externet

    Externet

    682
    137
    Aug 24, 2009
    Better do not touch nor tap onto the CD connector at all.
    Obtain the schematic to select where to feed the aux input. If no schematic; look at the integrated circuits data sheets. You may find which is the audio path management.
    Better using the AM radio path, or perhaps the IC has an unused auxiliar available. The data sheet of the audio path management IC is the key for everything. It may be an about 18 pin IC surface mount.
    Look at one by one to identify it.
    Did that to my car unit using the unwanted cassette audio path. All OK.
     
  3. 73's de Edd

    73's de Edd

    2,510
    1,018
    Aug 21, 2015
    Sir SilviuMerlusca . . . . .

    That shot without the other side is meaningless . . .see if this 300 series Blaupunkt might be using the same audio IC's , with the audio oriented ones being those in my YELLOW boxes. That would then let us orient the left and right audio inputs connections to that IC.

    REFERENCE . . . . .

    upload_2018-7-11_12-16-29.png


    73's de Edd
    .....
     
  4. kellys_eye

    kellys_eye

    4,286
    1,143
    Jun 25, 2010
    Far easier to change the complete head unit to an after-market version that has all the facilities and ports you actually require.
     
  5. Externet

    Externet

    682
    137
    Aug 24, 2009
    Replacing the head unit works when there is connector adapters available to match the source/destination wiring.
    Interfacing to telephone, GPS, and on-steering wheel controls are a headache to adapt when implemented... Sometimes there is Vss input sensing to raise volume, diversity antennas...

    The attachment from Edd, if relevant, shows 3 'unlabeled' candidates to be the audio management chip. And good chances that the CD player connector carries digital audio instead of L,R.

    Lifting the pertinent L,R AM-in pins and bringing them to a stereo cable jack outside the cabinet works. Then , selecting 'AM' enables/becomes the 'Aux'
     
  6. Externet

    Externet

    682
    137
    Aug 24, 2009
    Mini-disc on cupholder into aux added on my vehicle after surgery... Cassette is disabled.

    upload_2018-7-13_9-54-12.png
     
  7. 73's de Edd

    73's de Edd

    2,510
    1,018
    Aug 21, 2015
    Sir SilviuMerlusca . . . . .
    Can you hear us ? . . . . .Can You Hear Us ? . . . . . . .CAN YOU HEAR US . . .NOW ?
    Where . . . .you . . . .g o o o o o o o o o o o o o ?

    ASIDE . . .
    Thir External net . .
    I Think I Thee the black umbilical cord, being routed towards the point of thurgical inthision!
     
    Last edited: Jul 13, 2018
    Richard9025 likes this.
  8. Externet

    Externet

    682
    137
    Aug 24, 2009
    Hi Edd... regards...
    The wire comes out at the lower right corner between the radio chassis and its dash slot, down towards the cup holder by a door unlock switch side groove to the Minidisc unit.
    The wire at the left is for a coolant thermometer towards the probe inside the engine outlet hose and has nothing to do with the 'Aux'.
    Pissed by adorn instruments that tell no temperature, added one meant for barbecueing with alarm :rolleyes:
     
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