f57b-14a068-aa
F5 = 1995
7 = Ranger
B = body electrical
14A068 = Ford part number for general use, in this case fuse/relay panel, not Ranger specific, not even truck specific
AA = revision of part, AA is 1st revision, AB would be 2nd revision, AC ect.......
F5 does not mean it was only used in a 1995 vehicle, F5 means the previous 14A068 part was changed more than just a new revision so its year was updated to denote the major change
You could find an F5 part in a 2020 vehicle if it was never changed enough to update the F5 designation
In 1999 Ford changed their Year and Model designations, Year is now 1 digit, Model is now 2 digits
1999 = X
2000 = Y
2001 = 1
.
.
2010 = A
2011 = B
Ranger = L5
So YL5x- would be a 2000 part number designation for use in Rangers