[dwcsr]

55-57 have a different wiper than 58-59. the firewall/cowl in the wiper area is also different in 58-59. This is the reason Dynacorn doesn't produce a 58-59 cab only 55-57. there are 3 switches you can get for 58-59. one cable for vacuum , one electric no washer button and one electric with a washer button

w/washer button part number is Delco D6352 GM 1993543
fits 60-61 olds f85
61-63 Chevy truck
59 buick
64 chev
60-63 corvette
chevy GMC truck 58-60