How can you find out what the different numbers mean? My truck is a Mercury, but the Vin starts with a "4".... 4 is US as well. 2 is Canad, 3 is Mexico,J is japan, K is Korea, Germany is W, that is all I remember. The 10th number should tell you what year it was made 88 is J, 89 is K, and so on (skip O, Q, U, and Z, 2001 starts at 1). #s 4-8 tell the body style, engine type, model, etc 2nd digit is manufacturer. I think Mercury is M 11th number tells you what plant iit was assembled at. I think all that is right. It has been a few years since I have had use any of that info. (I used to sell GM and Honda parts in the service dept. of a dealership) If your truck is real old, I don't think any of that applies Yeah, pre-1981 cars use a different, manufacturer-specific system. Lead numbers 4 and 5 are used in America by Ford Motor.