I don't know if there are any parts # gurus on this sight but I need the factory part #'s for the a 65 Olds Cutlass Holiday coupe w Factory air and 2 speed wiper motor for both the blower motor switch and the wiper switch.
I have most of the manuals for this car but I can find factory parts manuals.

 

I don't know if this helps,if it is the part # or not.If you have the 65 Cutlass Assy manual-mine is the loose binder type-look on page 35C60-2.6
There is a diagram on installation of the AC controls in the dash.Picture of the unit shows maybe 5 plugins-looks like vacuum,and a screw holding it to dash.589205-switch assy. Looks like a part # to me,I will look for the 2 speed wiper control also.If you have the book,the page is near the back. ---bil

 

OK-same book-page 1A2D-3.3 2 speed wiper installation.1993665 switch assy It has a double prong on top for black/pink wiring plug,and a single on bottom for a dark blue wire. This number is differant than for the single speed wiper switch,so I think this is what you are looking for. ---bil