Retrieving security code.

Question

Last yr, my husband went to an auction and bought me a kenwood car stereo. Because of the wriing harness, we did not use it for my suv. Now, his stereo died and he was going to use it in his. BUT... he found out that you needed a security code??? Is there anyway to retrieve this from the stereo itself? There is no way we would ever be able to track down the previous owner. It is a KDC-4022
Any help or suggestions you could give us would be greatly appreciated.

Thanks Jan
[e-mail]
gcj at charter dot net