RE: Brake light switch replacement
Picture worth thousand words - old Chinese proverb written by some guy with a scanner.
Washers are Ford p/n C5DZ-2B129-B, bushing is p/n C5DZ-2474-B, the pin is 379797-S. Ford recomends that you lightly lube the shaft, bushing and washers with 10 weight oil. The switch is standard for all 65 and 66 drum, disc and power systems, and 67 to 70 non-power brake systems. Power brake versions are different and sometimes, well - won't work in regular systems.