Hayen 3653 Adjustable Fan Control Switch - Taurus Car Club of America : Ford Taurus Forum
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Old 03-18-2004, 07:08 PM   #1 (permalink)
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Has anyone installed a Hayden 3653 Fan Control Switch on their Taurus? Does it has a specific instruction of how to install it on Taurus?

Any info will be a great help.

Thanks!
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Old 03-21-2004, 08:36 PM   #2 (permalink)
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I have a Flex-a-lite one and I will assume it is the same or similar. What you want to do is tap into the ground wire that controls the low speed fan relay. This is going from the PCM to the CCRM on a '96-97. When the switch closes due to a rise in temp it will ground out the wire. This will turn on the fan when the key is in the run position.

You failed to give enough details about your car to give any more specific directions.
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Old 03-22-2004, 11:23 AM   #3 (permalink)
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Sorry. I have a 94 Taurus 3.0L Automatic Wagon.

The hayden 3653 fan controller only has two terminal connections. Do i just need to tap one of the terminals to ground and the other to the CCRM? Which wire on the CCRM?

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Old 03-22-2004, 11:35 AM   #4 (permalink)
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Looks like the Tan and Orange wire on pin 14 labeled LFC relay is the one. And yes you just run a ground from one terminal and tap into the OEM wire. Do not cut the wire and use only the fan control. If you tap into the wire, then the PCM can still control the fan for when the A/C is on. If you cut the wire and disconnect it from the PCM then it will only work when the temp raises and closes the switch.
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Old 03-22-2004, 11:43 AM   #5 (permalink)
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Wow! this is great! You're a savior! I'll work on it immediately! Thanks again!
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Old 03-23-2004, 09:08 PM   #6 (permalink)
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I tried to do the wiring but found something weird.

The Tan-Orange is normally ground. With A/C OFF (fan OFF), my test light turned ON when I checked the Tan-Orange line with the positive terminal of the battery. When I turn the A/C ON (fan ON), I can read 13 Volts from the line top the ground but if I try to test it with my test light (Tan-Orange line with Ground), the fan turns OFF. I did not install the wiring yet.

Please HELP!
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Old 03-24-2004, 12:32 AM   #7 (permalink)
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Now that I think about it the pre '96s used reverse logic compared to the post '96s. Just use a 1A fused hot in run wire, if you want the fan to run after the car is shut off use an always hot wire. Be sure to use a fuse.
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Old 03-24-2004, 11:11 AM   #8 (permalink)
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Won't this blow the fuse since the Tan-Orange line is ground (negative) on normal condition (FAN OFF)?

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Old 03-24-2004, 11:52 AM   #9 (permalink)
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I guess you are confusing me. Is it a ground or is it a hot wire? Do you have a volt meter?
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Old 03-24-2004, 12:59 PM   #10 (permalink)
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Yes I have a voltmeter. What i mean is that if the Fan is OFF, the Tan-Orange is ground. A test bulb lights up if I tap one connector to the Tan-orange wire and the other connector to live hot line (positive battery terminal).

If I tap a fused live wire on it and provides a positive voltage on it, the fuse (I think) will blowup. It's like tapping a live hot wire to ground.
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