If I'm looking at this film strip picture correctly (attached below), on the original vacuum motor the passenger side arm attaches to the upper pin and drivers side to the lower pin. I believe it's a view from the inside of the cab facing forward.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
