Fix Fault Xtrons

Does anyone know if a manual for a XTRONS D4303 is still available?

Can anyone help my xtron stereo button lights always stay on even when the engine is off how do I fix this

just got the xtrons 712 car radio for my vw golf but it keeps losing it radio stations every time i take out the key ,i have turned the red and yellow wire around but it still doe's not work please i ... more