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Windshield wiper motor types


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ToyCanPilot
New User

Jan 31, 2019, 11:04 AM

Post #1 of 10 (356 views)
Windshield wiper motor types Sign In

I have a project that requires knowing if the windshield wiper motor is running, either intermittent or constant. My question is: Are all wiper motors chassis grounded with switching +12 to feed it? OR, are there motors that have +12 fed direct with the switch / intermittent timer connecting chassis ground? I have a circuit that works on the +12 switched version. Just asking if anyone has seen the other version? Thanks


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jan 31, 2019, 11:29 AM

Post #2 of 10 (349 views)
Re: Windshield wiper motor types Sign In

There's no universal way they work - WHAT IS THIS VEHICLE would help. Some were manual once, then vacuum motors on up. Most would ground to firewalls - body metal.
Guess it's super cold in lots of places. ARE or WERE they stuck and you turned them on? NOT good if so. Other, just give the body of the motor a whack if an easy shot with like a plastic hammer or screwdriver handle just hit the body and try them knowing they are free to move.
More to watch out is close the hood and if these stand up put them back down or some get a twisted mess of wiper arms.
Just state what the car is and if there's unusual circumstances I covered a couple,


T



ToyCanPilot
New User

Jan 31, 2019, 11:45 AM

Post #3 of 10 (342 views)
Re: Windshield wiper motor types Sign In

The project is aftermarket intended for any car / truck. I may be stuck with different answers (vacuum for one), but just asking about electric types. If most all are switched +, I'm in great shape.
This has no link to a current problem on a vehicle. Sorry If that wasn't clear.


Tom Greenleaf
Ultimate Carjunky / Moderator
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Jan 31, 2019, 12:35 PM

Post #4 of 10 (340 views)
Re: Windshield wiper motor types Sign In

OK, sorry to come on a bit harsh but you need to fit one and know what the original intent was. Anything close to current concepts meaning ~70s and up is electric BUT! Some will come on and powered by mechanical washer pump piggy backed on motor and you need to know if motor is to "park" both means hides under a hood or ends up much more down than when operating.
There's very common intermittent wipers and has been for ages now done differently.
Just asking if it get bat+ to make it run and motor is grounded is most common to me for electric set ups. Timers, delays and park positions it's still empowered till it parks so wiring each isn't a chance a two wire thing.
If really going for basic see what RV or Marine wipers have to offer for a motor and a wiper arm would be simple on many just power and ground both by wire fiberglass doesn't ground of course. One speed it's on or off.
Vacuum ended with an AMC forget those. Manuals are an arm up by a sun visor once 100+ years ago (I'm not that old but used them) with the turn handle inside? Check for some HOT ROD type sites they just might sell something so simple like that need a place to make a hole!


Oh my there's also how far the sweep action is some cars use just one wiper front many more for rear.


Wild other! Some have them for headlights and have for ages sorry I never had to fix any of those so zero help how or when those work but know some even washed headlight glass! Lots to think about!


T



Hammer Time
Ultimate Carjunky / Moderator
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Jan 31, 2019, 12:55 PM

Post #5 of 10 (326 views)
Re: Windshield wiper motor types Sign In

These motors are not even close to being that simple. Most all have modules that control the motor. They have a parking system internally that receives constant power. Some of them are even operated by the Body Control Module. That module makes decisions based on varying voltage signals or varied resistance to ground in the line determined by switch position so good luck trying to DIY wire it.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Jan 31, 2019, 12:55 PM)


ToyCanPilot
New User

Jan 31, 2019, 12:56 PM

Post #6 of 10 (322 views)
Re: Windshield wiper motor types Sign In

TG: Nah - not harsh, you're a new forum to me, so culture is mine to learn. I'm using 555 timers to stretch intermittent pulses and OR'ing them with constant and "cycle complete" signals. I need to best keep a steady ON while wiper motor has any activity across 30 odd seconds.
I modeled the + switched version on my '03 Toyota Corolla. It has interesting wiring for constant (hi&lo), intermittent and "one sweep" functions.
My client tasked me for this function, but prohibits me saying what for (std dev contract).
I suspect other posts will corroborate your assessment, but I welcome and am thankful for all. But, expressly Thanks for yours.

HT: I don't doubt "creative" answers are Way past worth decoding, CanBus for one. I'll take the best % hits vs my complexity. Client has to push past that. But thanks for input.


(This post was edited by ToyCanPilot on Jan 31, 2019, 1:08 PM)


Tom Greenleaf
Ultimate Carjunky / Moderator
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Jan 31, 2019, 1:11 PM

Post #7 of 10 (309 views)
Re: Windshield wiper motor types Sign In

I'm confusing myself now: OK, there's tons of ways in use too much to re-think one IMO for a basic operation. If that's all you want without wild hassles get one for a boat! A yacht even. Some are just on/off and stop where you shut them off so wait till it's out of you vision to toggle OFF.
Those would be listed with what % of turn they go back and forth. Ticked off at one of my own did the double arm so wiper ran a whole section of square glass not just a middle pie slice. Don't ask I've fixed or created more crap than anyone sane ever would (appreciate it if you don't agree too much on that) and it worked.
Not this deal and forget it but owned TWO that were powered by power steering fluid pressure! Don't ask they were so strong would bend a tire iron last was a 1969 lots of others before that now obsolete forget whacked like that.
You do need to know what "sweep" you need,


T



ToyCanPilot
New User

Jan 31, 2019, 1:34 PM

Post #8 of 10 (299 views)
Re: Windshield wiper motor types Sign In

Hmmm, I'm still not describing this well (tricky with NDA's). This project is an installed object for a vehicle for during wiper operation, so adaptation to the existing wiring is the question.
Between you and HT, I think I'll have 2 classes: those I can link to motor activity, and those not. Client will have to eval the tradeoffs and if further pursuit is warranted.
Again, thanks for the inputs.
Sometimes it's a can of worms, others can be fire ants.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 31, 2019, 2:20 PM

Post #9 of 10 (288 views)
Re: Windshield wiper motor types Sign In

As Tom pointed out, the most basic designs would be in marine applications. Motor vehicles have become very sophisticated.

Some of the newer designs can have one combination switch that can operate multiple components through a single circuit but simply having it switch through multiple resisters that are read by a central module and interprets specific voltages or resistances to specific commands..



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Jan 31, 2019, 2:20 PM)


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jan 31, 2019, 11:44 PM

Post #10 of 10 (264 views)
Re: Windshield wiper motor types Sign In

Whatever you come up with just make sure it's fused. I really can't think of any way wiper/wipers were ever done that were so wonderful for all conditions, super baking heat, super cold, ice, mud or dried salt spray from roads or ocean they all stunk. Throw in bug spat, tree pitch too you need a one edge razor, lacquer thinner and clean that mess off the more you can appreciate a mule about now that could see well and forget this nightmare!


Tom







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