Audio Systems: Alpine Cd Player, alpine cd, diaghram

Question
Hello I Have A alpine CD  AmFm Radio It Has A Wire Diaghram On The Top Of The Radio All Is  Good Until Last Wire Is Orange Wire But Its Not Listed On The Diagrams ? Where does it go  And They list A Black wire but no Black wire comes off the harness? Black is ground 99.9 Times Out of 100.But I Cant guess This to be so with orange wire unhooked no ground in site the radio works holds presets but cd player wont take a cd or play . With the radio off a e______ is displayed Can you help me please thank you for your support

Answer
Just hook your own ground wire to the rear mounting bolt, and hook the orange to an illumination wire, or just tape it off and not bother with it. The not taking CDs is a bigger problem, probably not worth the cost of repair. Time to get a brand new one.