1964 or 66 VIN code regulation?

[farna@xxxxxxx]

Does anyone know how to find the regulation or law that required a 13 character VIN? I had all that info on my laptop. I managed to search the net and find it in Korea, but the HD blew up on that one and took everything with it! I'm about to search a couple backup CDs I made, but don't think I put the info on a CD before leaving. I've tried Google and another search engine -- now all I can find is 17 character VIN info, and some garbage about 10 digits and such that has been repeated overthe net that I know for #$%% sure is wrong! Yet 5-6 sites quote the same thing (none give a source). I have the actual law for the 17 character code, that's easy! I know for sure that it was sometime around January 1966 (or very late 1965) that the 13 character VIN was required to be used. I have the serial number (not VIN) data for AMCs for early 1966 production, and have actually seen an early 66 model that didn't have a VIN but one of the serial codes. But I can't find the details on the !
 13 character VIN! I did find a couple other manufacturers, so I know there's no formal order except that the last six have to be the consecutive number, and the year and engine have to be identified somewhere in the number. But I REALLY want to see the actual US specs again!! Any ideas?? 

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