To use the original Volvo stereo's HU-603, etc with an external audio source as a MP3 player or iPod, you can hack into the CD-changer input. The problem is that the headunit won't open the CD-changer line inputs if it cannot communicate properly with it, over a digital bus line. I'm looking for information what is needed in this communcation, just to enable the input and use for external audio source. Thanks in advance
- posted
11 years ago