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Old 04-13-2012, 10:48 AM   #1
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Wiring suggestions

I just got my weeks check and am about to order the Mishimoto dual electric fans. I was wondering what the best way to wire them would be? Do you guys wire them straight to the ignition, a switch, or a thermostatic fan controller. Which is the easiest option and which is the best way of wiring them.
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Old 04-13-2012, 11:19 AM   #2
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This is what I use from summit racing.43$
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Old 04-13-2012, 11:20 AM   #3
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They have different fan controllers.if you need a link let me know.
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Old 04-13-2012, 12:40 PM   #4
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Re: Wiring suggestions

Quote:
Originally Posted by 89Saleen141 View Post
I just got my weeks check and am about to order the Mishimoto dual electric fans. I was wondering what the best way to wire them would be? Do you guys wire them straight to the ignition, a switch, or a thermostatic fan controller. Which is the easiest option and which is the best way of wiring them.
Use relays and thermostatic switches.
Never run the power straight through a switch and to a fan.
Always use a relay.
Oversize the relay because the start up amperage load can spike up to 70 amps which will quickly destroy switches and relays that are to small.
If your fan does not have one, use a one way diode on the power connections.
When you cut the power to a fan and it is still rotating it can become a generator and power spike your electrical system. The diode prevents that from happening.
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Old 04-14-2012, 05:21 PM   #5
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Re: Wiring suggestions

Thanks, so connecting it to the ignition is not a good idea?
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Old 04-14-2012, 05:36 PM   #6
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No not without a hd relay.the kit I posted has an 65 amp hd relay.it not 70 like Trojan suggested but it is specifically designed for electric fans.it is really easy to wire.anyone can do it.I love mine, especially for the fact I can dial in my engine temperature to exactly what I want my car to run at.imo some of the best 43$ I spent on my car!
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Old 04-14-2012, 06:28 PM   #7
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Re: Wiring suggestions

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Thanks, so connecting it to the ignition is not a good idea?
No, it is not a good idea.
Since they draw so much power I always power mine through the contacts of a HD relay directly from the battery along with the appropriate fuses or circuit breakers.
The control circuit can be powered through one of the accessory connections in the fuse box though, since it only powers the coils to activate the relays that power the fans.
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