12v deactivation with negative input

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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=141476
Printed Date: May 13, 2025 at 8:52 AM

Topic: 12v deactivation with negative input

Posted By: 167mph
Subject: 12v deactivation with negative input
Date Posted: July 05, 2016 at 1:58 PM

Hello all,

I have searched and I have not been able to find the answer. I apologize in advance if I missed it.
I need to deactivate an ignition 12v feed with a negative input. In the absence of this negative input, I need for the circuit to operate normally. Any help would be greatly appreciated.

Tony

Replies:

Posted By: tonanzith
Date Posted: July 05, 2016 at 11:22 PM

Here

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Gary Sather

Posted By: howie ll
Date Posted: July 06, 2016 at 12:31 PM

BTW that should only be momentary, if it's on constantly it will drain your battery, if you intend using it as an immobiliser I suggest making terminal 86 IGN rather than battery.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.

Posted By: 167mph
Date Posted: July 09, 2016 at 6:25 PM

Thank you for the help!

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