Open With Momentary, Stay Latched Until Reset

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=143495
Printed Date: May 12, 2025 at 2:02 PM

Topic: Open With Momentary, Stay Latched Until Reset

Posted By: spartanfan
Subject: Open With Momentary, Stay Latched Until Reset
Date Posted: August 24, 2017 at 5:18 PM

Here's what I'm trying to accomplish...

With engine on/running:
Upon switch activation, accessory will power up +12vdc with constant power;
When door opens, ground momentary, Relay will open accessory circuit and stay latched open to kill accessory (Keep in mind +12vdc is still constant...but not flowing to the accessory any longer);
Latch will reset (close) when the constant +12vdc is removed.

Any help is greatly appreciated! Thanks!

Replies:

Posted By: the12volt
Date Posted: August 24, 2017 at 8:56 PM

If I understood your description above correctly, this should work.
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