C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Aug 20, 2023 | 10:04 AM
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Default 68 Wipers

I'm putting together my 68 after paint. I've finished the wiper bay but haven't put the wiper door and related components on yet. I tried my wiper switch and nothing happens. Do I have to have all of the door system installed before the wiper motor will work ?
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Old Aug 20, 2023 | 10:27 AM
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Is the wiper door actuator in the open position so that it's linkage presses the switch on the firewall?
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Old Aug 20, 2023 | 11:57 AM
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I will check that.
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Old Aug 20, 2023 | 06:41 PM
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the answer is yes you have to have the wiper door connected so the plunger depresses the safety interlock. You can jumper it if the door is not on. Its there so the wipers will not work with the door closed
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Old Aug 21, 2023 | 09:25 AM
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OK .....thanks
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Old Aug 21, 2023 | 06:24 PM
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Wiper switch needs to be grounded
Press or jumper/bypass this switch, it's what prevents the wiper motor from getting power until the door is fully opened

M
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Old Aug 21, 2023 | 11:04 PM
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On the 68- red-headed step-child- the firewall limit switch controls the ground -not power like 69-72

You have a constant 12+ source from where the headlight switch connects to power -it does not run through the limit switch

Here's a great diagram - thanks to Willcox-



If it is a 68 "only" motor the limit switch is ground switched.


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Old Aug 21, 2023 | 11:19 PM
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Of course the 68 is different LOL, He'll still need to depress or jumper that switch though right?
M
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Old Aug 22, 2023 | 05:06 AM
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Originally Posted by Mooser
Of course the 68 is different LOL, He'll still need to depress or jumper that switch though right?
M
Yes
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Old Aug 23, 2023 | 09:43 AM
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Thanks for all the help !!!!
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