Hi all , after replacing the crankshaft position sensor on my '99 Ford focus , i was wondering what info is needed to attain the radio code for the radio/cd unit ?

I've read in the handbook that it should ask for the code on switch on but mine comes up with the car reg in the display , not code . Is this correct ?

And after searching other posts , it looks like i need the model and serial number from the radio and i guess the unit has to be slid out to check a serial label somewhere ?

Any advice greatly recieved

Paul