Where can I find the Code for my Ford Cd6000, serial # M182086?

I have entered 0487 with the unit running off a psu on a workbench and unit switches off everytime I press 5 after inputting the Code. Does this mean that it is searching for the data lines but cannot find any, therefore it shuts down.
Tnx for clarifying the code #

Brett
April 2008

that is your code for the radio or you mean how do we get the codes ?

Dave (Nottingham)
April 2008

I mean where can I find the code, related web sites etc

Brett
April 2008

there you go Brett your code is 0487

Dave
April 2008