Originally Posted by 65chevelle300post
First it was 64 and 65's were never built with the square 2 speed motor's period. The USA or Canada deal never entered the conversion, that myth has been dispelled beyond any shadow of a doubt.
The VIN on my 65 says Chevrolet DD no Canada anything. And there is no way on earth the dealer or anyone else added a two speed motor + wiring harness "which would be different" not to mention the two speed switch which I have the original still working. My car is a base model post car POS and there is zero chance than anyone added anything to it and there were no splices in the wiring.
Therefore I'd have to conclude that at some point the square motor 2 speeds were used in USA built cars, or at least the post cars. I'd be willing to bet there are other USA built post cars with the square motor 2 speed.
I think it's interesting that the supposedly more common two speed round motor's aren't even being sold by any of the restoration shops, yet the square motors are a dime a dozen. Pretty much defies explanation.
If you look at the pic of the fellow from Sweden's car, it has a Canadian trim tag. All the other posters who said they have square 2-speeds are Canadian cars. Yours is the only one that is US and has a square 2-speed.
The fact that your car is a post car (300 or 300-Deluxe) means that it would have come standard with a 1-speed wiper motor. A 2-speed wiper motor (with the switch and wiring) could have been dealer installed, or installed by the owner later. Or if it came from the factory with a 2-speed wiper then the car was ordered new with the comfort and convenience group option, which would have also included an outside door mirror and a day-night inside mirror and a Optikleen glass washer fluid bottle in a bracket attached to the inner fender. Did your car have those originally too?
As to the wiring and the switch, you are making a lot more of that than it is. What you need to realize is that ALL 64-66 Chevelle firewall wiring harnesses were set up for 1-speed wipers only, and ANY car that got a 2-speed wiper (whether factory or dealer installed) had a separate jumper harness that had to be added to operate that and the washer unit. The hole in the firewall was already there on ALL cars, and all the dealer had to do was pop the plastic plug out of the hole and run the jumper wire through that hole, and change the wiper switch. It is about a 20 minute job (if that much) with the right tools.
To prove the point, there was a dealer accessory kit to install 2-speed wipers with a washer on a factory 1-speed car, which included the motor and ALL those peripheral parts (including the switch and wiring). So there is absolutely no reason that the presence of a 2-speed switch and wiring on your car means that those parts had to be factory installed.
Lastly, if your car is very original there should be an ink stamped date code on the square part of your wiper motor. What is it? There will also be numbers stamped into the plate on the forward end of your wiper motor that identify the motor and its application. What are those numbers? I'd be willing to bet a substantial sum that the numbers will show that your car has a replacement motor, or a 66-67 motor. Either way, if it is a square 2-speed motor then it is NOT factory installed motor if your car is a US built 1965 Chevelle. Period.