On the drivers side foward fender/engine compartment panel. If you have a 289 in it, practically opposite of the fuel pump. Look on the panel for two dimples. So, lower than the bag, and to the rear of the bag. Sorry, no photos.
And, I think you'll need to buy the correct wiper switch to make it all work.
67 GT 350 (#0036)("Miss July" 2004) owned since 1971. And I still drive it...SAAC 29 Concours GOLD, Div II, MCA Concours Trailered Gold 2X,
Also: 67 GTA S code COUPE (under construction)
General Shelby and Mustang enthusiast, MCA certified Concours judge