Rich, What year is your Viking 60 donor truck??? According to what I could find through my resource documents, the 1958-59 Chevy medium and heavy duty trucks had electric wiper motors (see pics below). 1958-59 Series 3 (Light Duty) trucks show with vacuum motor in the parts book. Medium and Heavy trucks in 1957 came with either the vacuum or optional electric. Anywhich way, perhaps the diagrams may help on placement of the motors.
~ 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)
