windshield wiper motor/switch problem

knightmoose · Jul 19, 2008

please help 68 camaro standard coupe;

my winshield wipers only work when i turn on the wipers by pushing in on the knob which causes the wipers to turn on spray water then shut off, the only way the wipers work is when it is pumping water which causes me to push in and hold, the 2 speeds slow and fast dont work, i replaced the motor with a new one and it still only works when im pushing in and holding, im thinking the switch could be bad or i have a bad ground, but if i had a bad ground im thinking it wouldnt work at all?

Is the switch bad only opening one circuit or something?

Z15CAM · Jul 19, 2008

Sure sounds like you either have a bad Dash Switch or the Wires are not connected to it. It may even be wired in reverse. To see if the Wiper motor will respond to live Switch Control place the switch in Hi or Low Speed position and take a voltage reading on the power terminals of the Wiper Motor. You can also check the Wiper Motor by simply running a jumper from the positive terminal of the battery to these terminals. They power Hi, Low and Reverse Park if a Hide-Away System. There should be a Ground strap from the Wiper Motor Casing to one of the Bolts that run through Rubber Mounting Brackets.

67 RSS · Jul 19, 2008

I put all new harnesses in my car.

Did the same thing..you can trouble shoot with the wiring schematic found in the asm manual but the cure (for me) was to swap the light blue and dark blue wires in the connector under the dash (or at the dash switch I dont remember which).

As Z15 suggests it sounds like its wired wrong.

I used two different vendors for the underhood harness and the underdash..not sure which of them was wrong...the under dash is my guess...

Did you buy a new harness?

Let us know what you find!

Steptoe · Jul 19, 2008

The wiper switches dont last forever
I rebuilt mine anout 16 yrs ago, lasted for a few more, then replaced it
Watch for the little springs when pulling the tabs back.

knightmoose · Jul 19, 2008

i put my hand in the back of the switch and giggled the wires and it worked, i had to drop the steering column to get to it work now i guess i just bought and installed a new mortor for nothing but at least it will last for a while to come,

clean68rs · Jan 23, 2012

I have just gone through the prosess of taking apart my wiper switch cleaning the parts and putting it back together with successful results. The problem I was haveing was the switch would only work on the wash cycle. Before buying a new switch I felt I had nothing to lose buy trying to fix the switch I had. This is on a 1968.I took the switch apart and cleaned all the parts theres nothing to it. The thing to be sure of when putting it back together is to make sure you push down on the plug side all the way, makeing sure the presure is all the way in on the spring before you tap over the houseing that holds it in. I put the switch in a vise useing light presure to hold it while I worked on it. I used a small ballpeen hamer to tap over the edge[three spots is fine] just enough to hold it, then I finished tapping them over useing a small flat punch. The switch is now working fine. The problem was that over time the back of the switch had become loose. I hope this may be helpful to others out there working on thier 67 or 68s. Scott.

windshield wiper motor/switch problem

knightmoose

Z15CAM

67 RSS

Steptoe

knightmoose

clean68rs

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