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Cheap Mod: DIY AUX Input in a 2005-2008 Factory Head Unit

Discussion in 'Audio & Video' started by fbconvert, Jun 9, 2011.

  1. fbconvert

    fbconvert [OP] It works if you work it.

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    I was really close to getting it figured out. but then way too many other things came up. I finally put it down after I completed my 2009 JBL Bluetooth upgrade (Link). I recently just moved to Portland but now things are finally starting to settle. I might be interested in trying to figure it out again. My 05' head unit is still just sitting in a box already disassembled. I could use some help on understanding that data sheet though. I haven't really looked at it. Unfortunately, the write up I found way back in the day seems to be a broken link now. It should be pretty simple still. Just determine what the Right and Left hand input channels are on the audio chip and solder your wire to them. Your post kind of got me thinking about this again so who knows.
     
  2. fbconvert

    fbconvert [OP] It works if you work it.

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    Bought as a wrecked vehicle almost done repairing it. It is my daily driver
    Check out the diagram from the data sheet that pscrev20 posted.

    [​IMG]

    The problem is the Radio Input could be an of those input channels. You might be able to trace it to the radio transformer but I am pretty sure it will almost require a trial and error approach. Unless anyone else has another idea. Since I have a spare head unit I wouldn't mind attempting this I just haven't had the time.
    [​IMG]
     
  3. pscrev20

    pscrev20 Member

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    Philip
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    AUX jack in stock radio, overtakes FM.
    I've figured it out. I'll post something as soon as I get it written up and pictures in order.:D
     
  4. fbconvert

    fbconvert [OP] It works if you work it.

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    Sweet I can't wait to see it!
     
  5. brandonn

    brandonn pretend this is a clever saying

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    Just did this mod, works perfectly but I think I screwed up the FM radio. It's all static now, not sure what happened. Any ideas?
     
  6. pscrev20

    pscrev20 Member

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    AUX jack in stock radio, overtakes FM.
    Sounds like you may have forgotten to plug your antenna back in. Happened to me first time I removed my Head unit. Double check that first.
     
  7. brandonn

    brandonn pretend this is a clever saying

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    Where's the antenna located? I don't remember seeing an antenna..
     
  8. pscrev20

    pscrev20 Member

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    AUX jack in stock radio, overtakes FM.
    If you check on the back of you radio, there should be a round plug on the left side. That's for the FM antenna. The cable is probably laying there in the dash, it's not attached to the wiring harness.
     
  9. Numbnutz

    Numbnutz Well-Known Member

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    Just finished this mod. I have to say hands down it's the best $4 I've ever spent. This was my first time soldering also, after a YouTube video I was ready to go. Thanks to the OP for this write up.
     
  10. brandonn

    brandonn pretend this is a clever saying

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    Wow, that was it. Coulda sworn I plugged it in. Thanks! haha
     
  11. NativeTaco

    NativeTaco Counting days until June...

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    FM1 or 2? I'm waiting to do this mod until someone figures the FM override method.
     
  12. cbs5090

    cbs5090 New Member

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    DIY Aux Input
    I did this mod 2 days ago and it was great except that I also have engine feedback and static when my charger is plugged it. Unplug the charger and it is crystal clear. Has anyone figured out a way around that? I might not be keeping a tab on this thread so if someone does, please shoot me a message so that it will hit my e-mail.

    Thanks to the OP for figuring this out. I had to buy the soldering iron but the total project was $9. Crazy cheap compared to $200-$300 options.

    Edit: Dug around through this thread and may have found the problem- http://www.droidxforums.com/forum/droid-x2-general-discussion/36215-feedback-coming-phone-when-plugged-into-my-aux-jack-my-car-when-charging-3.html

    It seems this item WILL stop the whining noise while I am charging. It was only $11 through amazon prime and couldn't hurt to have in the future:

    http://www.amazon.com/PAC-Ground-Isolator-3-5-Applications/dp/B001EAQTRI/ref=cm_cr_pr_product_top
     
  13. pscrev20

    pscrev20 Member

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    AUX jack in stock radio, overtakes FM.
  14. pscrev20

    pscrev20 Member

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    AUX jack in stock radio, overtakes FM.
    Ok, Inputs are as follows for those who want to know:

    AINRP1 (+), AINRPN1 (-), AINLP1 (+) and AINLPN1 (-) are for external 6 disc changer (I assume as they trace to the external connector and are balanced inputs).

    AINRP4 and AINLP4 are not used.

    AINRP3 and AINLP3 are for the built in CD deck.

    AINRP2 and AINLP2 are for the FM Tuner.

    This is for a Stock 6Disc changer in an 05 radio.
     
  15. fbconvert

    fbconvert [OP] It works if you work it.

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    Nice Work. I also updated my original post to include a link to your writeup. I am thinking I will have to give it a try when I have some free time.
     
  16. Jordanlawrence

    Jordanlawrence Well-Known Member

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    no way! how do you like it? I want to install it in an 05 tacoma.. how hard was installation and also how does it function
     
  17. bhai81

    bhai81 Member

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    Cheap cheap cheap AUX input
    if only someone could find a way to harness the power of the cd changer port in the back..... :)
     
  18. TheGrinch

    TheGrinch Cheese Head.

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    subbing right Fucking NOW
     
  19. acdronin

    acdronin Well-Known Member

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    Whoo Hoo! It worked (and I didn't have any screws left over) Thanks!
     
  20. pscrev20

    pscrev20 Member

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    AUX jack in stock radio, overtakes FM.
    That is what the aftermarket units like the USA Spec and GROM devices do. Hard part with that one is tricking the radio into believing that the external CD changer is there. That would take a microchip and some programming I'm sure.
     
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