install nissan sy700 radio?

I have bought a second hand Nissan Cd player model SY700 (on the face) the model code on label on the unit is 14787200 plus Nissan B8185-6M900 - I want to install this unit into an older non Nissan car (MG) I need help in identifying the wiring on the unit- the three cables are blue; pink and yellow with red stripe. A black wire (earth) is affixed to the unit via a screw on the back. A hand written diagram on the unit appear to show pink is ACC; blue is MEM; yellow/red is ILL - I cannot get the unit to power up although I saw it working in the donor car.