Are you sure there are no BARCODES on the radio casing ?
If so , please quote both numbers .
If not, then try 4612 as the code (but I don`t think this is the one)
These CLARION radios are a problem to decode for free (I don`t think anyone else on these Help Boards can calculate it either )so if 4612 doesn`t work , then try one of the "professionals" on Ebay or a search on Google.
RegWorts, May 2008