You are using the Antenna Power line for powering up the Amp. Thats why it only works with radio.
Dewan
Unregistered guest
Posted on
My amp is not getting any power, well power light came on then went out and i can't get it to come back on for some reason. Can i get a little help please?
Take your remote wire and connect it to the pos wire. See if that turns on the amp. If it does, then you have remote wire problem from your HU. It could be loose or damaged.
if the amp only works with the radio and not the CD, you just used the power antenna lead instead of the remote lead at the head unit as the amplifier trigger line. simple miswire issue.