Hey all im new to the forum so I hope I put this in the right section

I just bought a 1.25 Fiesta Zetec 2000 reg after some **** slammed into my Fabia. The Fiesta came with a tape deck, so I went and bought a JVC KD-R331. installed it correct to how the installation guide stated but I have a problem. The radio doesn't work when the ignition isn't on like the OEM radio did, also when I remove the face of the new radio for when im not in the car it will reset back to demo mode and forget all saved radio stations.
Can anyone advice on this, many thanks in advanced
James