two 30a auto relays to make 60a?

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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=105672
Printed Date: May 14, 2025 at 1:00 AM

Topic: two 30a auto relays to make 60a?

Posted By: stadler
Subject: two 30a auto relays to make 60a?
Date Posted: June 24, 2008 at 10:04 PM

Can I combine two regular auto relays to make a 60 amp? If so, How? I am new to this and am not sure if it can be done

Thanks in advance for all your time

Replies:

Posted By: i am an idiot
Date Posted: June 24, 2008 at 10:35 PM

Posted By: stadler
Date Posted: June 25, 2008 at 9:37 AM

Awesome!!!!!!! Thanks so Much!!!! To get this straight... I hook what I am controlling to the "Positive Trigger Wire" and 12v to "Common Terminal"? Just want to make sure. Thanks again!

Stadler

Posted By: i am an idiot
Date Posted: June 25, 2008 at 10:26 AM

Whatever you are controlling is to be connected to the Common (The large red wire) The smaller wires red and black are what trips the relay and turns it on. Anytime there is 12 volts across those wires, the large RED wire is connected to the funky colored wire at the top left of the picture. If you conect the funky colored wire to the battery via a fuse and proper size cable, and connect the large RED wire to the device, this will work as a simple on-off switch. If you have any more questions I will need to know what exactly you are trying to do.

Posted By: stadler
Date Posted: June 25, 2008 at 10:36 AM

Thanks. What I am trying to do is, wire a switch to the vehicle cooling fan and bypass the computer. The cars relay is bad and I do not have any money to fix it. It is a 94 Ford Taurus and I read that the fan initially (on start) draws aprox 60amps. I tried just a switch and fuse, and it pops the fuse immediatly. I read elsewhere that I need a 60a relay. Thanks again, I wouldn't be anywhere without you.
Stadler