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post #1 of (permalink) Old 03-25-2005, 07:05 PM Thread Starter
 
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4 wire wiper schematic

Anyone have a schematic for a 4 wire NON intermittant window wiper 1980 up?

I'm trying to help someone out and I don't have a switch. None of my Haynes manual have one with just the regular wipers just the intermittant wiring and people have told me the FSM doesn' get specific either. The one available online doesn't make sense either.

I'm beginning to wonder if the 4 wire was only used on the intermittant wipers
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post #2 of (permalink) Old 03-25-2005, 09:29 PM
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Re: 4 wire wiper schematic

This may or may not help.

I bought a complete intermittent wiper setup from a salvage yard Jeep (198x) on eBay.

I assumed that I would have to change the wiper motor to install the intermittent setup on my 1983 Scrambler. The assumption was that it would have a three wire motor.

While I did find about a $1 in change, several parking receipts, four or five cigarettes (decomposed) and a couple of things that must have been ink pens, I didn't have to change the wiper motor. It was already a four wire motor.

So the only thing required to install the intermittent wiper switch and it's attatched timing box was to unplug and remove the non-intermittent switch, install the intermitent switch and plug in the the harness from the timing box.

The harness was a little strange (best I remember), I still have a four wire wiper motor as a spare. Just might have the original non-intermittent switch in a box somewhere.

I can dig around in the stuff if it would help.

[img]images/graemlins/40BEER.gif[/img]
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post #3 of (permalink) Old 03-25-2005, 09:46 PM Thread Starter
 
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Re: 4 wire wiper schematic

Actually I would be more interested in the switch that was used with a 4 wire wiper motor.

I assume you would have to change the switch going to intermittant because there is no reostat with the original switch.
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post #4 of (permalink) Old 03-25-2005, 09:56 PM
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Re: 4 wire wiper schematic

[img]images/graemlins/thud.gif[/img] OK, I'll dig out the parts if I can...

Yes, I changed a simple switch for a more complicated switch and a timing box....

Here's the kicker... It simply plugged in.

[img]images/graemlins/40BEER.gif[/img]
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post #5 of (permalink) Old 03-26-2005, 10:52 PM
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Re: 4 wire wiper schematic

Found the non-intermittent switch and checked it with an ohm meter. Then took a look at the harness (wire colors) in both the 1983 Scrambler (changed from two speed to intermittent) and the 1985 Laredo (came with intermittent), everything is the same.

For the record, the intermittent setup does require a four wire wiper motor. But the harness of the switch and timing box simply plug into the same place as the non-intermittent switch.

Crappy picture but the back of the non-intermittent switch looks like this:



Arrow is pointing at Pin #1, seven pins numbered clockwise in the view of this picture to match the following schematic.



At some point when I have too much time on my hands I will draw this in ACAD, for now you get a hand drawing.

The wire colors are only vaguely similar to the [img]images/graemlins/lame.jpg[/img] Haynes Manual that I have. The wiper motor harness isn't even close.

Clear as mud? How can I help?

Here's what I think you really need:

<u>Wiper Motor Switch, CJ, 1983-86 </u>

Unless the harness is before 1983, then I'm not sure that switch will do it for you. If the weather isn't too bad tomorrow I'll uncover the 1981 (yard art) Scrambler and see what's still under the dash (wiper motor went with the windshield).

[img]images/graemlins/40BEER.gif[/img]
Dale
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post #6 of (permalink) Old 03-28-2005, 06:14 AM Thread Starter
 
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Re: 4 wire wiper schematic

Hey thanks Dale,

The mystery gets deeper though.

How does it park the motor? I see no connection to the low speed windings in the OFF position. If the internal switch moves to the other position when it's running and goes to ground when the wipers are in the park position. ???

It looks like if the wiper switch is in the OFF position and the wiper is NOT in the park position then power is fed back to the switch on pin 4 and goes nowere??
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post #7 of (permalink) Old 03-28-2005, 07:59 AM
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Re: 4 wire wiper schematic

CJ wipers are supposed to park? When I turn my switch off, the wipers stop where they are.
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post #8 of (permalink) Old 03-28-2005, 09:16 AM
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Re: 4 wire wiper schematic

[ QUOTE ]
CJ wipers are supposed to park?

[/ QUOTE ]

Yep. The black wire will drive the motor to the park position.
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post #9 of (permalink) Old 03-28-2005, 12:34 PM
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Re: 4 wire wiper schematic

[ QUOTE ]
It looks like if the wiper switch is in the OFF position and the wiper is NOT in the park position then power is fed back to the switch on pin 4 and goes nowere??


[/ QUOTE ]

I'm guessing that Jim is correct, power always supplied to the black motor wire so that it will park.

The blue motor wire supplies a ground to restart the timer each time the motor parks but isn't needed for non-intermittant configuration.

[img]images/graemlins/40BEER.gif[/img]
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