Late 56 windshield washer

Posted by HH56 On 2013/12/15 22:54:51

There is a wiper control switch and some instructions on ebay listed as late 56. It is the same physical style as the regular 55-6 control but the electrical contact in the rear for the washer is missing and there is a vacuum port on the side instead. Description says late 56 for use with washers without the red cap.

I am curious when this might have been introduced. Does anyone have this style or have seen anything like the older circa 53 and earlier purely vacuum style washer on a V8? Didn't see anything in the parts manual other than the electric model and only one control is mentioned. Any speculation as to why they might have chosen to do this?