simple relay from a newbie

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=106750
Printed Date: May 15, 2025 at 9:28 PM

Topic: simple relay from a newbie

Posted By: rj7630
Subject: simple relay from a newbie
Date Posted: August 13, 2008 at 3:45 PM

The OEM relay that powers my AC clutch also powers several other items and is prone to faliure due to the high loads it handles.. I want to take some of the load off of this relay by inserting a relay to power the AC clutch so that the OEM relay only energizes the new relay while I use another power source to power the AC clutch.

I think this is pretty straight forward stuff, but this is my first effort at this type of stuff.

Replies:

Posted By: i am an idiot
Date Posted: August 13, 2008 at 9:24 PM

85 to ground
86 is connected to the positive wire that comes from the OEM relay
30 goes to the battery with a large enough wire and a fuse at the battery.
87 goes to the AC compressor

Posted By: rj7630
Date Posted: August 14, 2008 at 10:59 AM

Thanks for the help. This appears to be a great forum, lots of members and good advise.

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