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Old 01-23-2009, 01:49 PM   #1
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Default can I use this fan controller to run both fans?

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I'd like to wire both fans in parallel, and possibly hook up the slim fans in the garage. What happens to amperage in a parallel circuit again?
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Old 01-23-2009, 01:59 PM   #2
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Why not just run them in parallel with the factory wiring? I had my first Miata set up that way with no issues. What is the amp draw on your fans you want to run?
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Old 01-23-2009, 02:05 PM   #3
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Originally Posted by zoomin View Post
Why not just run them in parallel with the factory wiring? I had my first Miata set up that way with no issues. What is the amp draw on your fans you want to run?
the stock fans pull 9 amps...so int eh parallel circuit that means 18-amps, right? My stock fans won't turn on, and never will.
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Old 01-23-2009, 02:11 PM   #4
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oh, ok then, what happened to them?
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Old 01-23-2009, 02:17 PM   #5
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oh, ok then, what happened to them?
they stopped working.
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Old 01-23-2009, 02:42 PM   #6
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What engine management are u using?
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Old 01-23-2009, 02:45 PM   #7
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I'd recommend using a relay, just because relays are a good idea.
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Old 01-23-2009, 02:56 PM   #8
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What engine management are u using?
this is irrelevant, I just asked a simple question.
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Old 01-23-2009, 03:16 PM   #9
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this is irrelevant, I just asked a simple question.
Not really, you can wire both fans in parallel and let MS control them, if thats what you have.
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Old 01-23-2009, 03:21 PM   #10
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Originally Posted by levnubhin View Post
Not really, you can wire both fans in parallel and let MS control them, if thats what you have.
ms is not switching pin 1r to GND for fan activation. Something fried and I'm not paying $700 for another mspnp.
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Old 01-23-2009, 03:27 PM   #11
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If you can post good pics of the board someone might be able to help diagnose it- a couple bucks of parts and some soldering might get it fixed.
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Old 01-23-2009, 03:31 PM   #12
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Originally Posted by hustler View Post
ms is not switching pin 1r to GND for fan activation. Something fried and I'm not paying $700 for another mspnp.
Ahh, now I got ya..
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Old 01-23-2009, 03:38 PM   #13
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Yes, that will work. You will really want to buy the 3/8 NPT screw in themosister thingy that reads temp. The ones that push-in the radiator are a joke. Besides, the prices is the same. But you'll have to tap something on the motor 3/8NPT and install the fitting.

I've put these on a few different cars. They work REALLY WELL actually. 2000-2001 Jeeps are very prone to electric fan failures because of the utterly rediculous design Chrysler blessed them with. So you can expect a "fan module" (100 bucks) or fans motor (220 bucks) to die ever 10k miles. After 3 fan motors and a new module, I put a new fan and one of these on there. Been working well. And like it says, it even has a wire to hook to the A/C compressor so the fans come on for A/C. (if you have A/C)

I say go for it. Just do a decent job yourself when you wire them up and you'll be fine. The wiring on those is weak-sauce though. I would seriously just let that thing turn on a 30A Bosch relay. The way it's designed now it's got a cheap-o 30A relay that has a harness that plugs into it. Relay's fine, but it will have like 16 ga. wire going to it.

Or if your savvy with electrical crap, just pull the two prongs out of the plug that are your power wires. (one's +12V, the other goes to the fans) and use a heavier wire and a new connector, then snap them back into the plug, then it plugs into the relay like normal.

Hustler and his fan threads.
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Old 01-23-2009, 04:01 PM   #14
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Hustler and his fan threads.
I just want to get this **** finished. If you're frustrated reading it, think about every time I get in the car.
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Old 01-23-2009, 04:57 PM   #15
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I'm watching this.

I have a very similar problem with MS and was just planning to get a programmable fan controller + twin spals.
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Old 01-23-2009, 05:18 PM   #16
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Originally Posted by naarleven View Post
I'm watching this.

I have a very similar problem with MS and was just planning to get a programmable fan controller + twin spals.
Its just about pushed me over the ******* edge...and there's a silver 135 with red leather in the valley next to some carbotech brakes and nt-01's..
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Old 01-23-2009, 06:14 PM   #17
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Its just about pushed me over the ******* edge...and there's a silver 135 with red leather in the valley next to some carbotech brakes and nt-01's..
I gave up after 4 hours and just wired the main fan to my cruise control switch. Which sucks because I don't have a coolant temp gauge other than the stock dummy gauge. So I'm prob always running too cold or too hot.
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Old 01-23-2009, 07:06 PM   #18
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I would use one of the fan controls from Delta Current Control if I was unable to control it with my ecu.
Delta Current Control
I ran one of these in my Lightning and was very happy with it.
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