That is exactly what is happening. Take out radio, undo some bolts on the side holding the CD changer to the radio. Carefully pull CD changer out. Unplug a ribbon cable connecting the two. Close to the ribbon cable socket on the CD changer you will see marked solder points. The ones you want are LOUT and ROUT. There is also a solder point near those called GND. You could technically use any ground, but they were all close so I used that. I took wire (forgot the gauge right now, but use your judgement after seeing the size of the points) and strip them so a very short amount is exposed. Add a little solder to the tips. And carefully melt that solder to connect it to the solder point. I did red to ROUT, green to LOUT, and black to GND. I used green in lieu of white. Hot glue the solder points you just added wire to to keep the stress low and to protect those spots. Put everything back together and route the wire between the changer and rest of radio and bolt them back together. Then just merge this wire with whatever you want. I chose to merge it to a short female 3.5mm audio cable. I then connected that to the Bluetooth adapter I mentioned earlier. I used little vampire clips to to tap power for the Bluetooth on the radio harness. Make sure you used switched power here and not constant. I used a multimeter to find those and don't remember the color. I ziptied everything up nice and put it back in.So I have an 03. Wanting to be able to use music off my phone too. Where exactly do you solder up the 3 wires to a female 3.5 jack? Could you explain the silent cd thing then too? Are you tapping in to the cd output so you need to spin a cd to keep the radio on that source? I'm sold on it, just want to understand it.
As for the silent CD, the site I gave earlier has a full CD image you can burn. You can also download individual tracks and make your own. I just downloaded the image. You leave this CD always playing. Now you're CD player is your AUX IN. You are tied directly into the CD pre-amps and the sound is perfect.
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