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retained accessory power with 1 relay?

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=104782
Printed Date: May 11, 2025 at 5:56 PM


Topic: retained accessory power with 1 relay?

Posted By: jdlandry06
Subject: retained accessory power with 1 relay?
Date Posted: May 16, 2008 at 3:24 PM

I've seen two different diagrams that work, on how to wire relays to retain accessory power at the head unit.   Today I heard there is a way to wire up a single relay to do this. I'm guessing the use of a couple of diodes, but have been drawing out ways for a good hour now and I can't seem to think of how to do this. Anyone heard of this, know how to, or can you think of and draw up a way to do this? No there's no purpose for me to do this. Just a brain exercise. I've heard it "may" be on the master's test. Any master mecp have any thoughts on this?



Replies:

Posted By: hotwaterwizard
Date Posted: May 17, 2008 at 8:44 PM
posted_imageHow about no relay?

posted_image

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


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