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Windshield wiper problem 1968

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Old 07-30-2013, 10:16 AM
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cdj46
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Default Windshield wiper problem 1968

Having a problem with my 68 windshield wipers. Car has not been driven in 40 years, however I have restored it with the exception of windshield wipers. I installed a used dash harness and new windshield wiper motor and does not work. Is there any manual that deals with trouble shooting wipers.
Thanks
Chuck
Old 07-30-2013, 11:04 AM
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Revi
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Is the wiper motor cutoff switch located under the steering column in the correct position? This **** should only move a quarter of a turn.

If you reach under the column and grab the **** with your right hand (fingers pointed up), rotate it counter clockwise to provide power to the wiper motor. (This is the position it should normally be in.)
Old 07-30-2013, 02:12 PM
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wombvette
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The 68 wiper system is in a class by itself. I assume you got a 68 harness and a 68 wiper motor?
Old 07-30-2013, 02:31 PM
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Revi
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Originally Posted by wombvette
The 68 wiper system is in a class by itself. I assume you got a 68 harness and a 68 wiper motor?
Nope, I have a 70 with working wipers.

http://willcoxcorvette.com/instructi...12_secured.pdf

Last edited by Revi; 07-30-2013 at 02:35 PM.
Old 07-30-2013, 03:46 PM
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cdj46
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Default 68 windshield wiper not working

Switch is in the correct placement. Wiper motor is a 68 and the harness was purchased through the forum by someone that sells parts regularly however I am at his say so. It looked the same when installed.
Thanks for responding. I am looking for perhaps a manual that can explain how the system works. Assembly manual is not detailed enough.

Last edited by cdj46; 07-30-2013 at 03:55 PM. Reason: Add note
Old 07-30-2013, 03:50 PM
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Easy Mike
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Fuse? Have you checked/did you change the wiper relay? Are you certain your used harness was good? Do you have power to the wiper motor?

Old 07-30-2013, 03:59 PM
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cdj46
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Fuse OK, Relay is new, the red wire that comes from the harness to wiper motor is hot all the time? Harness looked the same.
Old 07-30-2013, 06:46 PM
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Might have to check the wiper switch as well they are flimsy.
I just got mine working with lots of reading and replacing with 68 only parts; so ask away.
Wilcox tech section is priceless
Marshal
Old 07-30-2013, 08:10 PM
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loup68
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The wiper motor will only work if the wiper door linkage pushes in the firewall switch. And the switch has to work, besides having the bolt adjusted to push in on the switch button. Lou.
Old 07-30-2013, 08:42 PM
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cdj46
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The firewall switch is pushed in however I did not test the switch. I will do this in the morning. Thanks to all for your help.
Chuck
Old 07-30-2013, 08:44 PM
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1Fordman
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Willcox has an excellent diagnostic bulletin on the 68 wiper system.
Old 07-30-2013, 08:58 PM
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0Willcox Corvette
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CDJ46....

Questions...
1) Have you tested for power on the yellow wire at the motor?
2) Have you tested the motor to see if it runs.

If the over-ride switch didn't do the trick I would do the following.

First I would bench (or car) check the motor. I've posted the video link below for this. I've become lazy in my old age so now I just remove the bell crank nut from the wiper motor and test the motors in the car.

If you follow along with the video it wills show you how to test the motor with ease.

If the motor fails the test then replace the motor. If it works.. post back.



Wiper Motor Bench Test 68 Ver 1


Wiper Motor Bench Test 68 Ver 2 "Follow up"


Great threads on 68 Wiper motors can be found here:

Mister Willcox, 68 wiper motor

68 wiper problems

Also.. go read this..

http://willcoxcorvette.com/repairand...lp.php?hID=320

Don't worry about it... we'll figure it out.

Last edited by Willcox Corvette; 07-30-2013 at 09:00 PM.
Old 07-31-2013, 09:23 AM
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This is excellent. Thank you
Old 07-31-2013, 09:06 PM
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For anyone that is interested it turns out that the red wire was reversed with the white wire. Couldn't do it with out all your help. Thanks again.
Chuck
Old 07-31-2013, 10:40 PM
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Glad you got it worked out. I have two 68's and those wipers are a bi double t ich. Another thing to look out for with them. Make sure you have the under dash switch in the right position or you will drain your battery in a couple days.....ask how I know
Old 08-01-2013, 09:22 PM
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Originally Posted by cdj46
For anyone that is interested it turns out that the red wire was reversed with the white wire. Couldn't do it with out all your help. Thanks again.
Chuck
Whew.... Someone sure pushed the easy button.. I've seen 68 motor threads take weeks to resolve.

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