Windshield wiper going crazy
Thread Starter
Instructor
Joined: Dec 2007
Posts: 201
Likes: 1
From: Tucson AZ
Windshield wiper going crazy
1980, new lectric limited engine harness, new wiper switch, reassembling car after full restomod work. I have power and the digital dash and radio work fine (so I am assuming the grounds are good)
with switch in OFF and accessory on, wiper motor starts in low
move switch up one click, motor continues in low
move switch up another click, the washer pump engages
move switch up to last click, motor goes to high.
pressing down for Mist doesn't change anything.
There is no off.
I pulled the switch, inspected, and reconnected (left out of dash) and the same issues occur.
Its a brand new (bought 4 months ago) switch, the motor worked perfectly before removal.
any ideas??? I am stumped!
thanks
Pat
with switch in OFF and accessory on, wiper motor starts in low
move switch up one click, motor continues in low
move switch up another click, the washer pump engages
move switch up to last click, motor goes to high.
pressing down for Mist doesn't change anything.
There is no off.
I pulled the switch, inspected, and reconnected (left out of dash) and the same issues occur.
Its a brand new (bought 4 months ago) switch, the motor worked perfectly before removal.
any ideas??? I am stumped!
thanks
Pat
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
You have a problem right off in your second sentence......BUT....WHY are you turning your ignition switch in the column to 'ACCESSORY' ????? What does the wipers do when you have the key ON but the engine NOT running??????
You either have a bad switch...or you are missing something like the intermittent delay controller....which you did not write if you have or not.
DO you know how to bench test your wiper motor when it is in the car and NOT using factory wiring???? The reason is....when you understand how it works.....the you can verify the ground switching positions on the 3 wire connector that attaches to the wiper motor. It is a quite simple system....because that is all the wiper switch is doing...is adding and taking away the ground to the outer two terminals in the 3 wire connector.
Are you sure the wiper motor is CORRECTLY GROUNDED?????
DID the motor work 'perfectly' AFTER you installed the new switch???? OR was if working perfectly BEFORE you added the new switch????
DUB
You either have a bad switch...or you are missing something like the intermittent delay controller....which you did not write if you have or not.
DO you know how to bench test your wiper motor when it is in the car and NOT using factory wiring???? The reason is....when you understand how it works.....the you can verify the ground switching positions on the 3 wire connector that attaches to the wiper motor. It is a quite simple system....because that is all the wiper switch is doing...is adding and taking away the ground to the outer two terminals in the 3 wire connector.
Are you sure the wiper motor is CORRECTLY GROUNDED?????
DID the motor work 'perfectly' AFTER you installed the new switch???? OR was if working perfectly BEFORE you added the new switch????
DUB
Thread Starter
Instructor
Joined: Dec 2007
Posts: 201
Likes: 1
From: Tucson AZ
You have a problem right off in your second sentence......BUT....WHY are you turning your ignition switch in the column to 'ACCESSORY' ????? What does the wipers do when you have the key ON but the engine NOT running??????
You either have a bad switch...or you are missing something like the intermittent delay controller....which you did not write if you have or not.
DO you know how to bench test your wiper motor when it is in the car and NOT using factory wiring???? The reason is....when you understand how it works.....the you can verify the ground switching positions on the 3 wire connector that attaches to the wiper motor. It is a quite simple system....because that is all the wiper switch is doing...is adding and taking away the ground to the outer two terminals in the 3 wire connector.
Are you sure the wiper motor is CORRECTLY GROUNDED?????
DID the motor work 'perfectly' AFTER you installed the new switch???? OR was if working perfectly BEFORE you added the new switch????
DUB
You either have a bad switch...or you are missing something like the intermittent delay controller....which you did not write if you have or not.
DO you know how to bench test your wiper motor when it is in the car and NOT using factory wiring???? The reason is....when you understand how it works.....the you can verify the ground switching positions on the 3 wire connector that attaches to the wiper motor. It is a quite simple system....because that is all the wiper switch is doing...is adding and taking away the ground to the outer two terminals in the 3 wire connector.
Are you sure the wiper motor is CORRECTLY GROUNDED?????
DID the motor work 'perfectly' AFTER you installed the new switch???? OR was if working perfectly BEFORE you added the new switch????
DUB
I have never bench tested but I have seen the instructions so I can do it. The motor was good with the old switch - this new one went in when I reassembled the dash. Old one is toast from removing it.
Guess I'll learn the simple operation of the motor. thanks
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,851
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Clarification - this happens when the ignition is on, not on accessory.
I have never bench tested but I have seen the instructions so I can do it. The motor was good with the old switch - this new one went in when I reassembled the dash. Old one is toast from removing it.
Guess I'll learn the simple operation of the motor. thanks
I have never bench tested but I have seen the instructions so I can do it. The motor was good with the old switch - this new one went in when I reassembled the dash. Old one is toast from removing it.
Guess I'll learn the simple operation of the motor. thanks
http://willcoxcorvette.com/instructi...nstruction.pdf
Last edited by Willcox Corvette; Nov 17, 2014 at 09:53 AM.
Thread Starter
Instructor
Joined: Dec 2007
Posts: 201
Likes: 1
From: Tucson AZ
Obviously I have a ground missing somewhere, although I am not sure how that would make the washer pump engage at detent #2....but I'll figure it out.
cheers
Thread Starter
Instructor
Joined: Dec 2007
Posts: 201
Likes: 1
From: Tucson AZ
so I grounded every ground wire I can see coming off of this lectric limited engine harness, and it still goes nuts.
So I guess I will work forwards...the switch. Mine has the words WASH|WIPE on it, and the one on the Willcox site has the icon of wipers moving. Connectors hook up the same.
Right switch or wrong switch?
So I guess I will work forwards...the switch. Mine has the words WASH|WIPE on it, and the one on the Willcox site has the icon of wipers moving. Connectors hook up the same.
Right switch or wrong switch?
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