Car Stereo

My last amp i had hooked up to this head unit would only work on the tuner/radio and not when i played a cd, so i was wondering if this amp would work when i play a cd

You hooked the amps remote wire to the wrong place, you hooked it up to the decks antenna remote, take the deck out and hook the amp remote wire to the blue wire with a white line, that should fix it, some decks the antennea only turns on in tuner mode..