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Headlamp/wiper systems not working

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Old Oct 24, 2019 | 09:35 PM
  #61  
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No problem , I know how to that now. Let it rain. Great!
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Old Oct 30, 2019 | 05:40 PM
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OK RR I put in the new wiper control switch. Turned on wipers, Door opened slowly,wipers came on, Shut wipers off,they came down to rest , door didn't close. Shut door manually. Tried again, Started engine door opened with wiper switch off,turned on wipers ,nothing happened. Shut down eng. door stayed open. With door open and eng. running no vacuum at red hose when removed from actuator. Tried it a couple times with same result-- door opens as soon as eng. starts with dash switch off, turn dash switch on,nothing happens. What do you think? Thanks
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Old Oct 30, 2019 | 05:43 PM
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Originally Posted by Rescue Rogers
just moving this up to keep it close
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Old Oct 30, 2019 | 06:00 PM
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Originally Posted by 71Blue
OK RR I put in the new wiper control switch. Turned on wipers, Door opened slowly,wipers came on, Shut wipers off,they came down to rest , door didn't close. Shut door manually. Tried again, Started engine door opened with wiper switch off,turned on wipers ,nothing happened. Shut down eng. door stayed open. With door open and eng. running no vacuum at red hose when removed from actuator. Tried it a couple times with same result-- door opens as soon as eng. starts with dash switch off, turn dash switch on,nothing happens. What do you think? Thanks
Remember yo uneed to build pressure to vacuum out the vacuum tank.
With the new door wiper switch installed and the motor running for a few minutes to build vacuum, make sure there is vacuum coming in on the red hose D going to switch C, if there is, make sure there is vacuum on hose K with the motor on and wipers off. The wipers down resting on the switch puts vacuum to the relay H through switch K.

THe actuator Relay is spring loaded. THe vacuum coming in on the black and white hose K pulls the internal relay up and that makes the vacuum from the yellow line go through the realy K to the red line to the actuator holding the door closed, with no vacuum the spring releases the internal switch that puts vacuum from the yellow hose to the green hose making the door open.


So either there is a leak up stream from the wiper door switch C under the dash or the relay switch C is bad, or the actuator relay has failed or an attaching hose

With the engine running and the wipers parked on the switch you should feel it pulling on the black and white line. TIf you dont, test this buy pulling the switch C out first and test it with your finger openning and closing the switch. Dont do it with the wipers moving or the door may shut on the wipers. With the switch untouched you should feel vacuum going into the black vent tube on the door switch C. Then
If that works see if you can feel the vacuum change and go down to the actuator while you operate switch C with your finger.
IF theres vacuum on the balck and white line then feel and see if it changes on the red and green hoses as you operate it with your finger

Last edited by Rescue Rogers; Oct 30, 2019 at 06:26 PM.
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Old Oct 30, 2019 | 06:24 PM
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I editted my last response, reread it if read it earlier
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Old Oct 30, 2019 | 06:39 PM
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Thanks RR Will do.
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Old Nov 3, 2019 | 03:46 PM
  #67  
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RR- Have vacuum at red hose 'D'. Wipers down on switch "C' , no vacuum at 'K' at actuator 'H'. No vacuum at switch 'C' at 'K' . If there is vacuum at switch 'C' with wipers down and no vacuum at 'K' does that mean the new switch 'C' is bad? Thanks
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Old Nov 3, 2019 | 05:18 PM
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plug red hose D directly into black hose K bypassing switch c and see iff the door works. You can test that switch using the Willcox tests. It sounds like its bad. what happens if you hold it closed with you finger?
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Old Nov 3, 2019 | 06:11 PM
  #69  
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OK I'll bypass the switch and see what happens What do you mean by holding it shut with my finger. I put my finger on all ports and hoses and didn't see any changes . Thanks
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Old Nov 3, 2019 | 06:15 PM
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the white button on switch C that the wiper arm hits push on it like your finger is the wiper arm

Last edited by Rescue Rogers; Nov 3, 2019 at 06:21 PM.
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Old Nov 3, 2019 | 06:16 PM
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test and function of the switch

http://repairs.willcoxcorvette.com/1...e-valve-works/

good luck

Last edited by Rescue Rogers; Nov 3, 2019 at 06:18 PM.
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Old Nov 3, 2019 | 06:21 PM
  #72  
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OK So the switch has to come out to test. Right? I read the Wilcox test.
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Old Nov 3, 2019 | 06:23 PM
  #73  
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Unless you can get to the hoses and get them off, yes it has to come out. LIke you said , its probably bad if you can't get vacuum through it

Last edited by Rescue Rogers; Nov 3, 2019 at 06:24 PM.
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Old Nov 3, 2019 | 07:13 PM
  #74  
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Thanks RR Will see what happens. Go Hot Wheels!
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Old Nov 4, 2019 | 06:13 AM
  #75  
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Old Nov 4, 2019 | 04:19 PM
  #76  
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I think the new vacuum switch is defective. I bypassed switch, red hose 'D' to white hose'K' and door closed. Took switch out tested it with mighty vac and it failed the Wilcox test..
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Old Nov 4, 2019 | 08:27 PM
  #77  
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Good job. You should have this solved soon
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To Headlamp/wiper systems not working

Old Nov 4, 2019 | 09:41 PM
  #78  
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Thanks, RR We will see what happens next.
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Old Dec 16, 2019 | 08:50 AM
  #79  
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Update- Got another safety switch but didn't install yet . Winter here in upstate NY started too soon and had to put baby away till spring and head for warmer weather in Jamaica till April. Hopefully problem will be solved then. Again I want to thank the forum and especially Rescue Roger for his help. Looking forward to spring and getting back on the road.
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Old Dec 16, 2019 | 11:21 AM
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So sorry you have to leave beautiful upstate New York to go to Jamaica. That's so unfortunate. If you need help, say caring luggage or golf clubs in what's sure to be a dreary and horrible place. I would gladly help you out. Just send me a ticket and I'll be your personal assistant
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