windshield wipers

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Jun 27, 2023 | 09:33 AM

reed woodman

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5th Gear

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windshield wipers

i have a 1975 corvette 4 speed. my windshield wipers will not work when the door is closed but will work when the door is open. is there something wrong with my ignition switch?

Jun 27, 2023 | 12:57 PM

MelWff

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Quote:

Originally Posted by reed woodman

i have a 1975 corvette 4 speed. my windshield wipers will not work when the door is closed but will work when the door is open. is there something wrong with my ignition switch?

Just to be clear. With the engine running, all car doors closed, you turn on the wipers and nothing happens. You then open the drivers door and they work?

Jun 27, 2023 | 01:31 PM

reed woodman

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5th Gear

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yes. my radio also does not save the channels i program. that may be a radio problem

Jun 27, 2023 | 01:34 PM

reed woodman

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my engine is not running at the time but my key is on. steve

Jun 27, 2023 | 01:45 PM

MelWff

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Quote:

Originally Posted by reed woodman

yes. my radio also does not save the channels i program. that may be a radio problem

That sounds like whoever installed the non-factory radio didn't correctly wire the constant power connection.

Jun 27, 2023 | 01:45 PM

MelWff

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Quote:

Originally Posted by reed woodman

my engine is not running at the time but my key is on. steve

what happens if the engine is running, same problem?

Jun 27, 2023 | 02:30 PM

reed woodman

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5th Gear

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yes

Jun 27, 2023 | 02:59 PM

MelWff

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Is this car a new purchase or you have had it for awhile and this is a recent problem?

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Jun 27, 2023 | 03:25 PM

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Sounds like a ground issue. the door switch connects aground when open so you must have a bad ground at the wiper and its seeking aground and finds the door switch.....thats going to be fun tracing

Jun 28, 2023 | 07:02 PM

#10

jeffstuarts

Instructor

Joined: Nov 2013

Posts: 128

Likes: 29

From: Bloomfield Township Michigan

What is probably happening is that the wiper is grounding through the alarm system. Many years ago I had the same issue with my '69 that is equipped with the factory alarm. The wiper ground at the starter was broken. The wiper then used the path of least resistance which was through the alarm. On the '69 that is piggy backed to the wiper ground. When the door is open the alarm is grounded.
Jeff