How an Electric Fan DELAY Relay is wired.

Just to keep the draw off of your battery during startup, no matter what, this small and economical timer relay will interrupt the ground that your temp switch RELAY uses to come on. You would wire this in to an ignition ON circuit and then cut the last part of the ground circuit for your electric fans to delay them from coming on for however many seconds you want. It will Reset after every key on so it seemed like the perfect thing for my experiment/needs. I only worry about under hood temperature's affecting it so I'll report on that if I have any failures.
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[@discordbaron7135]

That is awesome and ingenious

Hi! I'm guessing I could use something like this to delay a second electric fan? What I would want is to have two fans connected to the same thermal switch, but not having them to start at the same time, not to have too high of an amp draw at that given moment. If the first one would start at the right temp I think it'd suffice for the second one to start 5s later. Any ideas? Thanks!

[@martywilsonwilsonenginesho7940]

You could do that with the delay timer being started by the first fan, then however long later you set the timer, it could energize the 2nd one. Thanks for taking the time to follow along!

[@calavanjodigger1485]

cool! ...in more ways than one lol