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Fog off when High beam energized

Printed From: the12volt.com
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=74613
Printed Date: May 15, 2025 at 8:19 AM


Topic: Fog off when High beam energized

Posted By: jd2171
Subject: Fog off when High beam energized
Date Posted: March 16, 2006 at 9:43 PM

I want to use Fords Upfitter switch inside the cab of my pick up to turn on the high beam circuit on a pair of PIAA lights that include both fog and high beams.  I also wish to wire the low beam circuit to the exisiting factory fog lamp source. My problem is want the fog circuit to turn off if the high beam circuit is energized.  The upfitter switch in the cab is a on/off switch.

Here is a crude attempt at a preliminary circuit...    is this possbile with relays?posted_image




Replies:

Posted By: hotwaterwizard
Date Posted: March 22, 2006 at 11:50 PM

I know it seams clear to you but it is a little hard for me to follow .

You want to use some switch that already has something on it to turn on some lights only when it is switched on and low beams are working and not when high beams are on.

Hmmmm.

This should do it To high beam and Low beam means Existing Circuit in the vehical that has voltage from the headlights right now.

posted_image



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





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