car radio code

[egs]

If the stereo is Blaupunkt you have to put the code Blaupunkt. Obvious. there is written, on some to the side or on a plate paper on the stereo.

[domenik]

ok but usually the car radio Blaupunkt numbers to the end of the year several example bp------------ 764-------- production fiat----------- the calculator begins with bp 4 blank spaces for the numbers, then x, then 7 blanks for the numbers and which numbers to take from the car radio to calculate ? thanks