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trigger when power off

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=139689
Printed Date: May 12, 2025 at 5:09 PM


Topic: trigger when power off

Posted By: tlalbers
Subject: trigger when power off
Date Posted: November 08, 2015 at 6:52 PM

i need a way to send a trigger (pulse) when a input source is shut off




Replies:

Posted By: cleanjohnt
Date Posted: December 07, 2015 at 10:15 AM
If a constant signal will work vs a pulse use a 5 pin 87/87a relay w/ input for signal on 87a, output on 30.



Posted By: howie ll
Date Posted: December 08, 2015 at 11:14 AM
Pulsed or constant input, pulsed or constant output?



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Read the installation manual, do a search here or online for your vehicle wiring before posting.


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