Radio Code?

[beyerlin5]

Just bought a nice 1994 740IL>>Radio shows CODE and will not respond. I pulled out radio and it has no serial # plate on it(I think it was removed) Does have written in ink Code 26511 on it with sharpie. I tried typing this in but just beeps at me and nothing else happens. Any ideas? Thank you

[shogun]

ask here on the E38 board
http://www.bimmerboard.com/forums/e38/