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Discussion Starter #1
I am looking at temperature switches that control electric fans. I found this one:
http://www.spal-usa.com/html/dampframe.htm
Although I dont know where I could mount the sending unit because i already have a sending unit in my intake manifold that feeds my temperature gage. I suppose i could get a 3/8 NPT tee.

Has anyone else encountered this problem. Are there other temperature baced fan controls out there that would mount easier?
 

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I have the Painless Wiring sensor/switch in my '69. I have the sensor mounted in the thermostat housing ('68/later style housing with the threaded boss for the thermal vacuum tree ... avaialbe from NPD for $9). It comes with a relay and a 30 amp, self resetting circuit breaker. I mounted the circuit breaker on the bottom of the battery tray where it's not visible, but still easy to get to. Even used the same circuit breaker to power my electric windows and keyless entry systems (both those systems have their own relays inside the car).

The Painless Wiring one was very easy to hook up and works great.
 

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Discussion Starter #3

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Word of caution:

I don't see my setup listed on that page (bought mine from Summit Racing). Mine looks real close to this:
http://www.painlessperformance.com/thumbs/30102.jpg
but does not have an adjustable sensor, and my sensor is way smaller than that one. You cannot use a sensor that has a very deep probe on it, if you're going to use the thermostat housing, as it will hit the thermostat itself.

I'll try to find the part number that I ordered from Summit when I get home tonight.
 

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No, the one I ordered was the 30103 kit. My switch looks different, though. It has a spade on the top of it, and barely protrudes into the thermostat housing.

That one pictured from Mustangs Plus doesn't have the 30 amp circuit breaker. It uses an inline fuse instead.
 

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Hayden ( www.haydenauto.com ) makes an adjustable fan switch/relay/fuse/wiring kit that I'm using and like. Their part # is 3651. It' on pg. 92 of their online catalog.
 

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You guys! What am I going to do with you? I post all this neat, trick temperature controls and you are still in the t-stat world. Nothing can compare to this switch. $34 direct from the manufacturer, adjustable on/off points, LED display, 18 Amp relay if you want it for a few bucks more.

I send you guys to school and all you do is eat your school books!

http://love-controls.com/controls/ts/ts_frame.html

Take the sensor it comes with, scrape of the plastic coating and you will uncover a brass ferule. Install this in a 1/4" compression fitting to MPT adapter. I run two of these, one for oil and one for water. They work great.

Don't make me have to tell you again! :)
 

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Don't use a 'T', as they don't work at all. Using a 'T' would pull both sensors out of the water, thereby defeating their function.

You can get a t-stat housing with a fitting on it, which I did. It worked great.

You can also get one of these:
http://www.alumrad.com/inlinetempsensor.jpg
===>> Click me for details <<===

The logic behind the above adapter makes lots of sense to me. Measuring the water temp on the cold side instead of the hot side for the fan...
 
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