Another wiper motor question
 

Guys,
I'm going to upgrade the wiper motor on my 65' from a single speed to a two speed and have a question about it. When I look up a 2-speed wiper motor, they list both a 3-terminal and a 4-terminal setup. Can anyone tell me what the difference is between these (besides the obvious) and if either will work with what I'm doing?
Thanks in advance!!

Re: Another wiper motor question
 

Just guessing, but might the extra wire be for a washer option?
Sam

Re: Another wiper motor question
 

I've never seen a 2 speed without a washer, but I believe the 2 speed with a washer, has 4 terminals. I'll take a look at the shop tomorrow.

Re: Another wiper motor question
 

Thanks for the replies! The washer function may explain the difference in the number of terminals. I can say that I didn't see any mention of a washer pump with any of the listings for 2-speed motors, so I'm not sure.
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Re: Another wiper motor question
 

The washer system is a bolt on option to the motor. The 63 Assembly book shows how to add the washer to a standard 2 speed motor. I also have two 2 speed motors, one is 3 and one is 4 plug. Both are 63 motors by the dates.

Re: Another wiper motor question
 

Thanks for the reply! So, apparently, either terminal configuration could have been used with a washer pump. I'm starting to wonder if it even matters which motor I order, since I'll be adding the correct wiring and switch for the 2-speed setup anyway. I really want to leave open the option of adding the washer pump, though.