I've found someone that makes the correct, date-coded windshield wiper decals. Shown are the decals I had made.
The info on the decal is broken down as follows:
4911476 [correct 2 speed wiper motor part #; group 10.150]
048 [day of the year]
5 [year; 1965]
5A [Assembly line # 5; "A" is day shift]
Therefore, this date translates to Wednesday, February 17, 1965 (the 48th day of 1965)
Made by a Don Lightfoot. See
www.angelfire.com/rock/69ss/ for info. Or email him at SedanSS69 <a t > hotmail.com
Decal placement shown on an NOS wiper motor I had on my shelf.