Audio Systems: No CD sound, eldo, gold series

Question
I installed a Kenwood KDC-5032 into my 91 Eldo with Bose Gold Series and i get sound from the radio but not from the CD.It reads the CD and shows that it's playing but no sound.

Answer
when the radio is on it sends power on the blue wire to open the antenna and turn on the amplifier
when the cd is playing and the radio is not it don't need the antenna to be up so it turnsit off no power on the blue wire this is normal the problem is that is turning off the amplifier  look for another blue wire or you need ignition to turn on amplifier