WINDSHIELD WIPER SWITCH knob sold separately* Sorry, electrical parts such as switches are non-returnable, even if not installed.* MakeCHEV ModelCORVETTE Year1968-1976 Item#SWT110 Instructions / Core Return FormClick Here Price$29.95EACH Core Charge$0.00 QtyAdd WINDSHIELD WIPER KNOB Year1973-1976 Item#WSW520 Price$5.00EACH Select option(s) for correct pricing QtyAdd WINDSHIELD WIPER KNOB Year1968-1972 Item#WSW519 Price$5.00EACH Select option(s) for correct pricing QtyAdd