- Official Post
Here is an Ebay auction for an NOS C5ZZ 15520 A backup light switch by Ebay member "bpr4130" with a starting bid of $175.00:
1967 - 1968 Ford Mustang/Shelby Back Up Light Switch For 4 Speed
NOS Part # C5ZZ - 15520 - A
https://www.ebay.com/itm/1965-1966-…&orig_cvip=true
-Fred-