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Dec 11, 2011 | 11:54 AM

Dokks74

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Electric Fan

Can I hook up my dual electric fans with a simple, "off" and "on" switch??

Dec 11, 2011 | 11:59 AM

Allan R

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Joined: Jul 2008

Posts: 24,528

From: Edmonton, AB. And "I am Can 'eh' jun - eh"

Quote:

Originally Posted by Dokks74

Can I hook up my dual electric fans with a simple, "off" and "on" switch??

What fans are you talking about? If rear defog, they will run with on/off but they are designed for off/low/high. A 3 position rocker switch is really cheap.

Dec 11, 2011 | 12:11 PM

oldcutlass

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From: Poteau, Ok

Yes you can, however I would put them on a temp control switch also. Not much more additional work involved.

Dec 11, 2011 | 01:47 PM

plee3 64Olds

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From: Chicago IL

Yes you can. I would wire 2 relays in the circuit to make sure you got good power to the fans.

Dec 11, 2011 | 01:58 PM

Lady72nRob71

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From: Plano, TX

You can add a secondary manual control, but you really need the primary temperature sensor in the radiator to switch them on when needed. A simple "forget" could cause serious engine damage.

Dec 11, 2011 | 03:40 PM

Dokks74

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Quote:

Originally Posted by Allan R

What fans are you talking about? If rear defog, they will run with on/off but they are designed for off/low/high. A 3 position rocker switch is really cheap.

My bad. I was talking about the cooling dual fans,lol... I sometimes get ahead of myself..

Dec 11, 2011 | 03:41 PM

Dokks74

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Quote:

Originally Posted by Lady72nRob71

You can add a secondary manual control, but you really need the primary temperature sensor in the radiator to switch them on when needed. A simple "forget" could cause serious engine damage.

I was going to use lighted switches, one for each fan. The switch HAS to be lighted while running.

Dec 11, 2011 | 03:43 PM

Dokks74

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Quote:

Originally Posted by plee3 64Olds

Yes you can. I would wire 2 relays in the circuit to make sure you got good power to the fans.

I was going to run 2 separate systems, one for each fan, grounded at the radiator support, hot wires going to 2 switches,fused, and then right back to the battery.

Dec 11, 2011 | 06:16 PM

68conv455

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Joined: Oct 2007

Posts: 634

Some of the posts here have ideas you should follow. Specifically:
Use of relays (one for each fan)
Wire one fan into a temperature switch
Other (backup) fan can be manual

Dec 11, 2011 | 08:04 PM

#10

64Rocket

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Joined: Sep 2006

Posts: 2,384

From: Union City Calif.94587

x2 on 68conv. It is best to use relays. For they take the load of the fan , not the switch. That way the switch is only an on/off. The switch turns the relay on and the relay supply's power to the fan.
Gene

Dec 12, 2011 | 05:30 AM

#11

Dokks74

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Quote:

Originally Posted by 64Rocket

Ok, where do I get such a relay?? What would it be called??

Dec 12, 2011 | 06:00 AM

#12

Lady72nRob71

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Posts: 11,798

From: Plano, TX

Quote:

Originally Posted by Dokks74

Ok, where do I get such a relay?? What would it be called??

Your local auto parts store should have relays. Similar to this one:
http://www.bgmicro.com/REL1068.aspx

They need a 12V coil, and 30-40Amp contacts.

Dec 12, 2011 | 11:19 AM

#13

Dokks74

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Quote:

Originally Posted by Lady72nRob71

Your local auto parts store should have relays. Similar to this one:
http://www.bgmicro.com/REL1068.aspx

They need a 12V coil, and 30-40Amp contacts.

tanks!!