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I am a bit perplexed after going thru the wiper system including relay's switch and motor it all seems to work just fine. The problem happens when I switch the ignition key off. The wipers come on and won't quit until I switch off the override switch under the dash. Has anyone had this issue or know what may be causing it. my car is an early 69 with AC. any help much appreciated.
Hi V,
Where on the windshield does the over-ride switch stop the arms?
Do the arms go to the 'park' position?
Regards,
Alan
When I turn the key on with thedash wiper switch off everything is fine. Using thedash wiper switch everything functions as it should hi, lo, off and wiper parks. When I switch the key off the wipers come on again in lo speed. If I turn the override switch off they stop in place without parking.
I don't see how this can happen if you still have the wiper door. When parked there is an electrical switch that keeps power from going to the wiper motor until the wiper door opens all the way.
Is the wiper door still on the car?
When I turn the key on with thedash wiper switch off everything is fine. Using thedash wiper switch everything functions as it should hi, lo, off and wiper parks. When I switch the key off the wipers come on again in lo speed. If I turn the override switch off they stop in place without parking.
Let's say you do everything above. Now the override switch is off. Now you start the car, drive, and use the dash wiper switch to activate the wipers. Now they are running? And if you shut them off they park. And then you shut the car off, they come back on and operate in low. How do you shut them off now? You can't turn the override switch off cause it is already off, isn't it? I might have missed something here, just asking.
It is a very fickle system that is for sure, even when it is working...
Last edited by kansas123; Dec 15, 2017 at 07:51 PM.
Reason: clarafication
I don't see how this can happen if you still have the wiper door. When parked there is an electrical switch that keeps power from going to the wiper motor until the wiper door opens all the way.
Is the wiper door still on the car?
ok I do have the wiper door off and the switch is bypassed with a jumper.
Let's say you do everything above. Now the override switch is off. Now you start the car, drive, and use the dash wiper switch to activate the wipers. Now they are running? And if you shut them off they park. And then you shut the car off, they come back on and operate in low. How do you shut them off now? You can't turn the override switch off cause it is already off, isn't it? I might have missed something here, just asking.
It is a very fickle system that is for sure, even when it is working...
OK I checked it out. weather the ignition switch is in run, or just in accessory the wiper switch on the dash functions normally when the override switch is on. I believe this is normal right? after turning the wipers off using the dash switch the wipers park as they should. After that I turn off the key and the wipers come on again. They run till I turn off the override switch. If I turn off the override before turning the key to off they will remain parked. Maybe this is the wiper relay or some internal motor wiring.
OK I checked it out. weather the ignition switch is in run, or just in accessory the wiper switch on the dash functions normally when the override switch is on. I believe this is normal right? after turning the wipers off using the dash switch the wipers park as they should. After that I turn off the key and the wipers come on again. They run till I turn off the override switch. If I turn off the override before turning the key to off they will remain parked. Maybe this is the wiper relay or some internal motor wiring.
No, normally you would not use the override at all; it is there to stop the motion of the wiper arms on the windshield in the event you need to change the blades. What I would do is remove the jumper and any other changes that have been made and then try to operate the wipers and see what you've got.
Hi,
Even WITH the wiper door limit switch by-passed the wipers shouldn't operated unless the wiper/washer switch on the dash is pushed to the on position.
The override switch under the the steering column is always
'on' until its turned to 'stop' the wipers for the purpose k123 described.
The connector at the dash switch can be inserted on to the switch backwards.
Have you checked that?
Hi,
Even WITH the wiper door limit switch by-passed the wipers shouldn't operated unless the wiper/washer switch on the dash is pushed to the on position.
The override switch under the the steering column is always
'on' until its turned to 'stop' the wipers for the purpose k123 described.
The connector at the dash switch can be inserted on to the switch backwards.
Have you checked that?
Regards,
Alan
That is what I would check. See the tab on the right side of the connector, it's easy to plug it in backwards as the switchl tab on the left doesn't do a good job of keeping the orientation correct. This connection can cause weird problems if backwards.
Last edited by theandies; Dec 16, 2017 at 10:47 AM.
That is what I would check. See the tab on the right side of the connector, it's easy to plug it in backwards as the switchl tab on the left doesn't do a good job of keeping the orientation correct. This connection can cause weird problems if backwards.
Thanks everyone for all your help. The wiper switch is on correctly. The jumper only emulates the wiper door being open since it it not there. My switch connector has two wires on the hi speed side Lt Blue I believe this is correct. I just cant figure out how the ignition switch is allowing the Motor to find a low speed path to ground. Or maybe there is power the motor connector with the key off. I have some time today gonna keep looking into it. Someone has done some rewiring of things before me I'm working to straighten them out. Also when the key is off there is power at the motor connector on the light blue wire terminal show in photo. this is why I'm thinking the motor wiring internally is shorting somehow. pic shows tester lit this is key off or on.
I guess it pays to buy from the original owner and not have a bunch of Bubba's messing with the wiring over the years. Good luck. It appears you know your way around wires so I'm sure you'll figure it out.
I guess it pays to buy from the original owner and not have a bunch of Bubba's messing with the wiring over the years. Good luck. It appears you know your way around wires so I'm sure you'll figure it out.
Yes Bubba had truly had his way with her. I am however, sorting it out one thing at a time. This car came to me as an heirloom I am determined to pass it down better than I got it. I will do my best to unbubbafy her.
I just went out to the garage and checked my 69. With the wipers off and parked, the ignition off and using a test light there is no power to either the blue, yellow or green connector unlike in your pic. With the ignition in the on position and the wipers parked and off the test light illuminates when touched to either the yellow wire at the plug (plug connected to the wiper motor) which is the hot wire with the ignition on and also the blue wire but not the green. You should not have power at that terminal with the plug connected and the ignition off and since the yellow wire is your 12 volt positive supply, I don't have a clue how you have 12 volts there with the plug from the wiring harness off. Is it possible you might have the two jumper wires from the headlight washer to the 2 plugs on the front of the wiper motor reversed? Not sure if that would do it either but you are getting 12 volts from somewhere.
I just went out to the garage and checked my 69. With the wipers off and parked, the ignition off and using a test light there is no power to either the blue, yellow or green connector unlike in your pic. With the ignition in the on position and the wipers parked and off the test light illuminates when touched to either the yellow wire at the plug (plug connected to the wiper motor) which is the hot wire with the ignition on and also the blue wire but not the green. You should not have power at that terminal with the plug connected and the ignition off and since the yellow wire is your 12 volt positive supply, I don't have a clue how you have 12 volts there with the plug from the wiring harness off. Is it possible you might have the two jumper wires from the headlight washer to the 2 plugs on the front of the wiper motor reversed? Not sure if that would do it either but you are getting 12 volts from somewhere.
Thanks GG yea it a puzzler. I will track it down sooner or later. must be bleeding over internally inside the motor somehow as the red and white power wire is the only one hooked up and hot. thanks for taking the time to check that out for me.
Thanks I have been looking at their videos and tutorial pages very good stuff indeed. In one he mentions something about voltage bleeding over and that it suggests a grounding issue but the motor ground is working. gonna get to the bottom of it soon.
Wiper woes
