how to make windshield wipers have delay

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Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=127126
Printed Date: April 28, 2024 at 2:54 PM

Topic: how to make windshield wipers have delay

Posted By: lucasoil4u
Subject: how to make windshield wipers have delay
Date Posted: April 26, 2011 at 8:28 PM

how can i make the hide side of my wipers a delay . I never us it and my car doesnt have a delay function. Thanks

Replies:

Posted By: hotwaterwizard
Date Posted: April 27, 2011 at 12:27 AM

You can buy one Premade or build one yourself.

https://www.stovebolt.com/techtips/wipers/index.html

https://www.jcwhitney.com/windshield-wiper-delay/p2004484.jcwx

posted_image

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: oldspark
Date Posted: April 28, 2011 at 5:09 PM

Often wiper delays are ground switching systems as opposed to the above diagram - but simply reconnect the +12V to the relay contact to ground in that case.

The +12V switching relay will usually cause the wipers to stop as soon as the +12V is off.
Most wipers have a hot +12V feed (ie, IGN +12V) and on (fast or slow) is by grounding.

And if 2-speed, due to self-parking complications, the correct wiring is needed - ie, parallel to the park switch, or dual pole relays etc.

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