C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

Wiper Circuit

Thread Tools
 
Search this Thread
 
Old Sep 7, 2010 | 02:44 PM
  #1  
Dantana's Avatar
Dantana
Thread Starter
Burning Brakes
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2007
Posts: 1,028
Likes: 1
From: SOUTH ELGIN IL
Default Wiper Circuit

Can someone please illustrate (in print or drawings) how the windshield wiper circuit is suppose to work? I can't find in my AIM. My wipers work when I push the button in but when I move the switch to position "on" I get nothing. I think I have a bad connection at the motor (yellow wire) but am not sure how the vacuum system plays into this.

I am thinking about migrating to a wiper system from something else that is all electric. Any suggestions on vehicles to remove the wiper motor, etc from and what I should be sure to change out besides the wiper motor?

Thanks,
Dan
Reply
Old Sep 7, 2010 | 03:23 PM
  #2  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Default

What year?
Reply
Old Sep 7, 2010 | 03:38 PM
  #3  
GATOR454's Avatar
GATOR454
Pro
15 Year Member
 
Joined: Aug 2003
Posts: 677
Likes: 5
From: Cary North Carolina
Default

Below is the wiper circuit with an intermittent add on. Ignore the add on (dark lines) and you have the circuit.



no vacuum 73+ (it was only used to open the wiper door)
Reply
Old Sep 7, 2010 | 03:45 PM
  #4  
GATOR454's Avatar
GATOR454
Pro
15 Year Member
 
Joined: Aug 2003
Posts: 677
Likes: 5
From: Cary North Carolina
Default

Constant power at motor (yellow wire)
Wiper is activated by grounding @ LT Blue
Hi/Low is determined if Blk/Wht goes to ground (if grounded then high, if not then low)

pushing the switch grounds the mist pump (dk. Blue) and the windshield wipers (Lt. Blue). So your circuit is good. must be a bad switch.
Reply
Old Sep 7, 2010 | 04:04 PM
  #5  
GATOR454's Avatar
GATOR454
Pro
15 Year Member
 
Joined: Aug 2003
Posts: 677
Likes: 5
From: Cary North Carolina
Default

In case anyone was wondering if the intermittent thing worked with 69-72 here is the diagram. door stays open.

Reply
Old Sep 7, 2010 | 04:21 PM
  #6  
Dantana's Avatar
Dantana
Thread Starter
Burning Brakes
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2007
Posts: 1,028
Likes: 1
From: SOUTH ELGIN IL
Default

Originally Posted by Easy Mike
What year?
'74 coupe w/ AC
Reply
Old Sep 7, 2010 | 04:26 PM
  #7  
Dantana's Avatar
Dantana
Thread Starter
Burning Brakes
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2007
Posts: 1,028
Likes: 1
From: SOUTH ELGIN IL
Default

Perfect diagrams, thanks a lot for those Gator.
Reply
Old Sep 8, 2010 | 01:07 AM
  #8  
7T1vette's Avatar
7T1vette
Team Owner
15 Year Member
Community Builder
Community Influencer
Top Answer: 5
 
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Default

The connector on the wiper switch can be installed upside-down. That will cause it to function 'oddly' or not at all. Easy to check.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
Old Sep 8, 2010 | 09:45 AM
  #9  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Default

Originally Posted by GATOR454
...In case anyone was wondering if the intermittent thing worked with 69-72 here is the diagram. door stays open...
Okay. You got me. Is there intermittent wiper action on the 68-72 models?

I have a couple of wiper speeds on my 68, but no intermittent.

I have intermittent on my 80.

Reply
Old Sep 8, 2010 | 10:14 AM
  #10  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Originally Posted by Dantana
Can someone please illustrate (in print or drawings) how the windshield wiper circuit is suppose to work? I can't find in my AIM. My wipers work when I push the button in but when I move the switch to position "on" I get nothing. I think I have a bad connection at the motor (yellow wire) but am not sure how the vacuum system plays into this.

I am thinking about migrating to a wiper system from something else that is all electric. Any suggestions on vehicles to remove the wiper motor, etc from and what I should be sure to change out besides the wiper motor?

Thanks,
Dan
If your wipers work by pushing in it sounds like you have lost the ground for the wiper switch. Is your dash bezel broken ?
Reply
Old Sep 8, 2010 | 02:25 PM
  #11  
GATOR454's Avatar
GATOR454
Pro
15 Year Member
 
Joined: Aug 2003
Posts: 677
Likes: 5
From: Cary North Carolina
Default

Originally Posted by Easy Mike
Okay. You got me. Is there intermittent wiper action on the 68-72 models?

I have a couple of wiper speeds on my 68, but no intermittent.

I have intermittent on my 80.

No intermittent until 78 I think. A couple of years back I added an aftermarket intermittent circuit to my wipers. I posted a how to on another forum and had requests for diagrams for earlier years. I posted the 73-77 diagram to answer Dantana's question (just erase the dark lines and you have the un-altered circuit). Then added the other diagram just in case someone wanted it.

pic of the install:


68's just have to be a little different, don't they?


funny thing about this circuit is because of the park function built into the wiper motor it's (wipe-wipe-pause-wipe-wipe-pause...)

Dantana, did you find the problem? 7T1vette's suggestion of a reversed connection at the switch made sense.
Reply

Get notified of new replies

To Wiper Circuit





All times are GMT -4. The time now is 04:40 AM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-7
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-8
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-9
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE