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switching voltages 12V-->24V

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=30304
Printed Date: October 08, 2025 at 7:53 PM


Topic: switching voltages 12V-->24V

Posted By: Big Blue
Subject: switching voltages 12V-->24V
Date Posted: April 13, 2004 at 12:14 PM

Hi,

I have a viper alarm/starter that I would like to put on my 24V Toyota Lancruiser. I have purchased a 20 amp 24v-->12v converter for the main power into the box.

My question is can I use a 12V relay with a 12V trigger to get a switched 24V output?

86 12V trigger
30 24V input
87 24V output
85 ground

I would assume it is just the coil that needs to see 12V and the contacts should be able to handle 24V??

I also need to switch the 24V glow plug light to 12V. Can I do this using a 24V relay and wire accordingly as above?

thanks

Brad




Replies:

Posted By: xetmes
Date Posted: April 13, 2004 at 5:08 PM
yea it will work



Posted By: robbie2883
Date Posted: April 14, 2004 at 11:41 AM
it will work as long as the relay you use is rated to handle the voltage. most handle 30vdc or more so you should be ok.

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if its jammed force it - if it breaks in the process it needed to be fixed anyway
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