Trouble installing aftermarket radio 1999 a4 quattro
 

I got a cheap radio just for the Bluetooth and aux, and i bought a wiring harness for the install. I followed the diagrams on the harness and radio but when it comes to playing music just the driver speaker works. Did i mess up the wiring somewhere or is there more I don't know? I do have the bose system and just have the metra 1784 harness and thats all.

Re-check your harnesses first. You may have one that's not plugged in, or not plugged in all the way.

G/L

Also make sure your radio isn't set to that one channel (long shot, but still possible).