I need help on this please! Reply 11 years ago on Introduction. I Made It! When you plug a USB flash drive into a USB-to-aux cable and plug the cable into an aux port on a head unit, nothing happens. This is a security feature used to help deter thieves.
The thumb drive is incapable of outputting an audio signal, and the aux input on the head unit is incapable of reading the digital information stored on the drive.
Add an Auxiliary (MP3/Ipod) Input to Your Car's Stock Radio
Please send me another explanation at klodian. Try finding a better spot or cheking your solder joints. Unless your head unit is compatible with your old CD changer, I think you're out of luck, or need to find some specialty interface to allow it to communicate with an OEM changer. If you go this route, I would recommend using a program called Exact Audio Copy to rip them as FLAC - if you're going to do something, do it right, and as a bonus even if you don't play them these files can be kept as a full-fledged archive for future use - and then use another program to copy and convert to mp3 en masse later if necessary. I don't recommend drilling while it's still attached, I was just trying to make it clearer. Reply 2 years ago. DaniM34 IlyaG Reply 2 years ago.