DIY Bluetooth setup for Audi Symphony 1 & 2 sound system

[Madmike405]

So for this thread post I'm going to be as descriptive as I can. I recently purchased a Bluetooth adapter so that way I could keep my OEM radio (head unit) or "HU" for short. Well anyways I went to Amazon.com and purchased an Apps2radio bluetooth adapter, and a PAC 98-04 Audi Symphony Adapter Cable. In total I had spent about 50-60 dollars in total and spent a couple of hours of my own time to put it together.

Tools I used/Equipment Needed:
1. Wire Cutters
2. Small Screw Driver
3. (4) VW/Audi Double Din Dash Keys
4. Flathead
5. Apps2car Bluetooth Adapter (8 pin)
6.PAC 98-04 Audi Symphony Adapter Cable



The first step was to get in the car and get you double din dash keys and place them in the four slots on the head unit. The four slots are located on top of the track seek button, the FR FF button, underneath the tape button, and underneath the random button. Once they're placed into the head unit, you should hear a click. Then you can easily take out the head unit out of the slot.
Images here:



Once you have the radio "head unit" taken out of the slot. The next thing to do is locate the plugin you need to take out to not only plug in the bluetooth adapter; but to also bypass the CD Changer if you have one. If not you'll still need to do this step so that way the bluetooth adapter will be plugged in and working. Once you've found the plug there is two tabs that you'll need to push in. Once this is done you can then slowly pry the plug with fingers or flathead if you have big fingers. Another tip that I learned was the ground cable that comes with bluetooth adapter. You can actually screw out a bolt/screw and ground the adapter to the back of the symphony head unit.
Images here:



Next step to do is take the wiring harness that you bought from a store, ebay, amazon, etc.. plug it into the plug you unplugged, then take the bluetooth adapter piece, and the wiring harness pin and connect the pin connectors together. Once they're together, plug them into the back of the symphony head unit. Once I had them plugged in, I tested the bluetooth to see if had worked. Once you turn on the head unit and select the CD Changer button it will scan for cd's; but what it's actually doing is that it's setting up the bluetooth system. Once it's all set up it'll actually show CD 1 and it'll beep once a it's connected to a device.
Images here:




Once I set everything up, it was time to make the wires not visible, make the head unit nice and flush like it was before, wire up the microphone, and wire the remote for the bluetooth calling. The cool part as I was looking for places to make the wires not visible under the dash, there was a peep hole where I could see the floor matt. and the then find a location to put the adapter somewhere and then I found a spot underneath the steering wheel so i thought it was a good idea for now.







The few things that needs to be done was clean up my mess from trying to find ways to hide my wires, and the adapter. Also I wanted to see if the head unit's cd player worked just incase and it did. So once I finished cleaning I looked at my work and it came out great and I hope the DIY helps you turn you stock (OEM) Symphony I and Symphony II head unit Bluetooth. Yes this DIY will work with Symphony II HU's as well. Same steps can be taken but it will work either way.
Images here:



Plus on the upside this DIY is pretty cheap, takes a few hours to setup/install, and the sound quality is pretty good too. I hope this helps, good luck guys and thank you for checking out my DIY! :D

Photos here:
https://www.facebook.com/mike.lavoie...4978178&type=3

[alien_brain]

theres no pics

[Audi4.2!]

I can't see the pics either!

Sent from my LG-H811 using Tapatalk

[al_oakos]

Do you have background noise when using the adapter?
I have white clipping noise from speakers when volume is above half.
The noise is greater when music is paused.
I tried various earth sources for ground with no differenc.
I am using apps2car BTI v2 with Bluetooth and USB charging function.

[a4kamila6]

I cant see any of the pics but all i did was buy a plug and play harness adapter for the radio, plug that in, and exchanged the cd changer with the bluetooth adapter basically. Works awesome but if you can do it for less than 50 bucks (what i paid) than well worth it. And besides you did it yourself bragging rights lol


Sent from my iPhone using Audizine

[Grainreaper]

I wish there were pics, seems a good number of threads have lost their pics...

There is enough info I should be able to work through it though

[pwise]

Does anyone have pics for this? I can't get mine to work. Keeps saying there is no CD.


Sent from my SM-A530W using Audizine Forum mobile app