This might help also.
Medalist & TXT Models (1994 to Present)
The manufacturers number and serial number for these E-Z-GO golf cart models can be found on a plate in the passenger side glove box. The manufacturers number DOES reflect the model year. This number will usually be: One letter followed by 3 to 4 numbers. Theses numbers will include the last 2 digits of the model year. The order of these numbers has changed over the years. The serial number is a 6 or 7 digit number that does NOT indicate the model year.
Marathon Models (1976 to 1993)
The manufacturers number and serial number for these E-Z-GO golf cart models can be found on a plate under the passenger side glove box. The manufacturers number DOES reflect the model year. This number will usually be: One letter followed by 3 to 4 numbers. Theses numbers will include the last 2 digits of the model year. The order of these numbers has changed over the years. The serial number is a 6 or 7 digit number that does NOT indicate the model year.