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Interval wiper governor

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Old Dec 14, 2015 | 06:21 PM
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From: Thomaston
Interval wiper governor

Had the truck out today light rain. Turn the wipers on low nothing, works on high, washer works. New motor and switch. Build date 8/89

I know it is the govonor. I felt and looked with a light all over the parking brake and the only wire I see is for the brake light switch.

Where else could it be? I could not find a location 8n the Ford manual either
 
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Old Dec 14, 2015 | 07:11 PM
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What year truck?
 
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Old Dec 14, 2015 | 07:23 PM
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From: Thomaston
Originally Posted by madpogue
What year truck?
1990 build date 8/89. I know it the old style. I am just going to bypass it
 
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Old Dec 14, 2015 | 07:50 PM
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behind the head light switch, kinda zip tied to the steering column brace. Way easy if you pull the cluster.
 
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Old Dec 14, 2015 | 07:59 PM
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My 90 is doing the same thing. Let us know if you find the solution
 
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Old Dec 14, 2015 | 08:22 PM
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From: Thomaston
Originally Posted by hairyboxnoogle
behind the head light switch, kinda zip tied to the steering column brace. Way easy if you pull the cluster.
Thanks. That easy to get to
 
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Old Dec 14, 2015 | 08:26 PM
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From: Thomaston
Originally Posted by pgg00
My 90 is doing the same thing. Let us know if you find the solution
I will and try to get a pic. There two different ones early bulk date before 9/89 and late after 9/89. They are kinda pricey. I found an early one on ebay for around 150 an a late one for 200 or 250
 
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Old Dec 14, 2015 | 09:08 PM
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If you trace back from the wiper switch, the module plugs into the wiring harness. It can be bypassed by just plugging the harness directly into the wiper switch. I believe that would still give you high and low, but no delay. I may however be wrong about that.

Typically these fail when one of the solder connections inside cracks. I fixed the one on my '88 by opening it up and resoldering the bad connection. Where they are located, the module gets a shock when the e-brake is released and the pedal snaps back. I would try fixing it before you replace it.
 
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Old Dec 14, 2015 | 09:16 PM
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Make sure the ground wire coming off of your new switch is attached to some bit of metal under the dash. If it's not attached, you won't have any delay wipers even if everything else is fine.
 
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Old Dec 14, 2015 | 09:17 PM
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I robbed one out of a brick for my 79, bypassing is hi/lo. Got it for like $5 at the JY
 
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Old Dec 14, 2015 | 09:30 PM
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From: Thomaston
Tecgod
The plan right now is just to bypass once I get it out I check it for bad connections

Mac

It a new switch I did ground it. They day I put the motor and switch in it worked

Hairy

We are putting together a junkyard pick day. There is a yard about 30 miles from the house that has about 5 acres of Ford trucks. So that be on my list.
 
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