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PostPosted: Sat Oct 22, 2016 7:49 am 
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1 BBL (New)

Joined: Sun Feb 14, 2016 5:07 pm
Posts: 6
Location: Reno, Nevada
Car Model:
I have a 1973 Scamp with a three-speed wiper motor. They were working fine until I recently did some work that required me to remove and reinstall the instrument cluster several times to fix some issues with the speedometer, cluster lights, and fuel gauge. I have all those issues handled now, but now the wipers won't work. The washer works, so the switch is grounded, but no wipers. I was planning to remove the switch and test it with a multi tester as the manual suggests, but I did this before the last cluster install and it seemed to work fine then. I know there is a circuit breaker in this system - is this attached to the switch itself? If it got tripped do I need a new switch? Any help on troubleshooting would be appreciated. Thanks.


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PostPosted: Sat Oct 22, 2016 8:37 am 
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Board Sponsor & Contributor

Joined: Thu Oct 31, 2002 5:39 pm
Posts: 23769
Location: North America
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IIRC the washer will work even if the switch isn't grounded.

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PostPosted: Mon Oct 24, 2016 12:14 pm 
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1 BBL (New)

Joined: Sun Feb 14, 2016 5:07 pm
Posts: 6
Location: Reno, Nevada
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After not working for two weeks, including on the one day it has rained here in the last several months, my wipers worked yesterday. I'm glad I checked before taking out the instrument cluster again. So it must have been a grounding problem, loose wire, etc.


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PostPosted: Fri Dec 16, 2016 5:20 pm 
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1 BBL (New)

Joined: Sun Feb 14, 2016 5:07 pm
Posts: 6
Location: Reno, Nevada
Car Model:
The saga continues...last night it was raining and when I went to turn the wipers on they didn't work. After driving a bit they came on on the high speed setting, but the switch was in the "Off" position. When I turned the switch to low speed the wipers stopped without returning to the low position. Then after a while the wipers worked normally in off, low, medium, high. By the time got home they had stopped again. At least after twisting the switch for awhile I got them to return to the low position. What PITA! So, does it make sense to conclude I need a new switch? Doesn't seem like a grounding issue if they are running in the off position.


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PostPosted: Fri Dec 16, 2016 7:43 pm 
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Joined: Thu Oct 31, 2002 5:39 pm
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Location: North America
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Signs point to needing a new switch.

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PostPosted: Sat Dec 17, 2016 8:12 am 
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Turbo EFI
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Joined: Mon Jan 12, 2015 5:55 am
Posts: 1292
Location: Brightwood, VA
Car Model: 1965 Plymouth Belvedere I
You need to make absolutely certain that the dash cluster, and most importantly, the wiper switch is securely grounded. Otherwise, you will have bizarre things happen like what you are experiencing.
(been there-broke that).
-Matt

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PostPosted: Sat Dec 17, 2016 10:17 am 
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1 BBL (New)

Joined: Sun Feb 14, 2016 5:07 pm
Posts: 6
Location: Reno, Nevada
Car Model:
Is there any way to check the switch grounding without removing the cluster? Perhaps a continuity check with the switch post? (the part the knob slides on to...)


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PostPosted: Sun Dec 18, 2016 9:35 am 
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EFI Slant 6

Joined: Sat Mar 19, 2016 7:25 pm
Posts: 286
Location: SW PA
Car Model:
Don't let coincidence be your nemesis, sounds like an inconsistent ground
at the wiper motor strap, put a screwdriver across a mounting stud to the
motor body. If she sparks & starts, the ground strap & nut etc needs to be
cleaned, or the attachment to the motor is compromised.
Otherwise, try to check for terminal push-out from behind the dash.


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PostPosted: Wed Nov 17, 2021 4:19 pm 
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2 BBL ''SuperSix''

Joined: Fri Jan 24, 2014 8:26 am
Posts: 11
Location: south shore Ma.
Car Model: 1973 dodge dart swinger
my cowl does not come off !!! what now ?? & it is a AC car.. i need to repair my linkage.. any easy way to do this ??? any ideas ? i went to get a sticker but could not because my wipers did not work, motor is fine but the linkage came apart.. all help, ideas is greatly apprenciated.. Paul 73 DDSwinger o ya is there any complete bushings repair kits out there.. ty


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