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wiring relay to output 12v

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=139311
Printed Date: June 15, 2021 at 11:06 AM


Topic: wiring relay to output 12v

Posted By: bicky
Subject: wiring relay to output 12v
Date Posted: August 15, 2015 at 4:28 PM

hi, the brake pedal in my car outputs 2.5ish volts and I need 12v for my aftermarket push start system to work. So I was thinking of using a relay so when I push the brake pedal it outs 12v. So if I wire it as shown below will this work?

87 - outputs 12v to aftermarket push start system
86&30 - fused 12v
85 - brake pedal wire



Replies:

Posted By: icearrow6
Date Posted: August 15, 2015 at 5:30 PM
THis will NOT work, and you could send +12v to the pedal wire potentially damaging the unit.

Please post year, make, model.


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Posted By: howie ll
Date Posted: August 16, 2015 at 1:20 AM
Use the 12Volt feed to one of the brake lights.

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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: hotwaterwizard
Date Posted: August 19, 2015 at 10:22 PM
2.5ish??? Almost sounds like A SCR Would do the trick.

https://https://www.onsemi.com/pub_link/Collateral/C106-D.PDF

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




Posted By: howie ll
Date Posted: August 19, 2015 at 11:52 PM
Not needed it translates out to 12 volts at any of the brake light feeds i the floor looms.

-------------
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: bicky
Date Posted: August 21, 2015 at 3:20 PM
thanks guys for the replies, I took howie ll advice and the used the brake light feed. thanks.




Posted By: bicky
Date Posted: August 21, 2015 at 3:26 PM
thanks guys for the replies, I took howie ll advice and the used the brake light feed. thanks.





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