Really weird part question
+4
Roadcaptain S3
77mali
thatfnthing
Joe73
8 posters
G3GM :: G3 :: General Discussion
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Really weird part question
I just got a big pile of parts from a really cool guy.Among the parts is[what he says is an intermittent wiper switch and motor set up for 73 77 GM cars. I've never even heard of these. He said they are really rare, and I don't doubt it.
Anybody got any info?
![Really weird part question <a href=](<a href=)
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![Really weird part question <a href=](<a href=)
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Anybody got any info?
![Really weird part question 20150113](https://i.servimg.com/u/f38/14/01/57/47/20150113.jpg)
![Really weird part question 20150114](https://i.servimg.com/u/f38/14/01/57/47/20150114.jpg)
Roadcaptain S3- Donating Member
- Street Cred : 26
Re: Really weird part question
Looks like a normal wiper motor but a nice delay switch. Delay wipers would be a nice option.
Joe73- Donating Member
- Street Cred : 83
Re: Really weird part question
I assume it's a three speed (as opposed to two) motor?
Roadcaptain S3- Donating Member
- Street Cred : 26
Re: Really weird part question
Can't speak for the rest of the G3's but delay wipers were available in the Montes from 75-up, though I would hazard a guess the GP's probably offered it too. The motor is the same as the non-delay one except for an additional timing circuit mounted to the front that uses a capacitor -- the dash knob controls how quickly (or not) the capacitor charges, and when it's full it fires the wiper motor for one revolution.
It's a pretty straightforward retrofit, but the dash control is slightly larger than the non-delay one, meaning a larger opening in the dash face, so you're looking at either surgery on the existing dash face, or finding a later model one. When I did mine, though, I got a rebuilt motor from Autozone, but I used a multifunction lever from a Dodge Ram instead of the dash control so it's integrated with the turn signals and hazard lights, so no need to cut the dash face up.
It's a pretty straightforward retrofit, but the dash control is slightly larger than the non-delay one, meaning a larger opening in the dash face, so you're looking at either surgery on the existing dash face, or finding a later model one. When I did mine, though, I got a rebuilt motor from Autozone, but I used a multifunction lever from a Dodge Ram instead of the dash control so it's integrated with the turn signals and hazard lights, so no need to cut the dash face up.
thatfnthing- Donating Member
- Street Cred : 65
Re: Really weird part question
I think the knob is for speed & you move it either left or right for low & high. Nice find.
77mali- Donating Member
- Street Cred : 62
Re: Really weird part question
Yep. It mounts in the same spot, switch moves left to right 3 slots and it appears you turn the knob clockwise to control the speed.
Roadcaptain S3- Donating Member
- Street Cred : 26
Re: Really weird part question
Intermittent wipers are pretty rare for our cars. Rotary dial switch version even more so. Usually, it's a slide bar. Slide bar style would fit just fine into your '77 dash bezel. Assume the rotary style would too...as I doubt GM provided a special bezel just for those. If he gave you the necessary wiring pigtail that runs out to the wiper motor, it's a fairly easy swap.
![Really weird part question 1976la12](https://i.servimg.com/u/f38/15/48/55/09/1976la12.jpg)
![Really weird part question 1976la12](https://i.servimg.com/u/f38/15/48/55/09/1976la12.jpg)
Mcarlo77- Donating Member
- Street Cred : 77
Re: Really weird part question
I have one of those that steve has in the above picture. It goes in the same spot. Im missing one of the knobs on it though. I might put it in one day
ant7377- G3GM Addict
- Street Cred : 36
Re: Really weird part question
there should be a place for another 2 prong connector on the motor.
chris has that in his 73 monte
chris has that in his 73 monte
1973montec- Donating Member
- Street Cred : 17
Re: Really weird part question
My service manual for Elcos and Malibu cars shows the delay type wiper wiring etc. It's a nice option for sure....
pila- Donating Member
- Street Cred : 43
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