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Using One Switch to Control Multiple Circuits.

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=143605
Printed Date: March 22, 2026 at 4:52 AM


Topic: Using One Switch to Control Multiple Circuits.

Posted By: marklar65
Subject: Using One Switch to Control Multiple Circuits.
Date Posted: October 08, 2017 at 4:36 PM

I need help (preferably via a diagram) with wiring a single 12volt switch to control 3 circuits. I believe using relays would be the safest way to achive best results. I have a concern about the relays being energized while the vehicle is off since it is a motorcycle. Also since I want to turn the circuits off while the vehicle is running I am kinda lost as how to wire correctly. I appreciate your help in advance with solving my issue.



Replies:

Posted By: the12volt
Date Posted: October 10, 2017 at 4:12 PM
Is the switch you want to use already on the bike and have a 12V+ output? If so, what is it currently being used for?
Do you want all 3 circuits to turn on and off with this switch at the same time? If not, please describe.
What is the total current draw of all 3 circuits combined?

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Posted By: i am an idiot
Date Posted: October 13, 2017 at 4:58 PM
And would you ever want more than 1 device on at a time?


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