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Insane Network Engineer
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5,969 Posts
If the fan is turning on when you have it hooked up and you followed the instructions from s-seriesforum.com PDF file, then you have your defroster or AC on...You would have wired from AC postive to the relay to the fan.... You should be using 2 relays...
 

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Insane Network Engineer
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5,969 Posts
Blaze1 said:
This is the way dual speed fans operate. If you used the diagram from the forum to wire up everything is correct. The fan runs on "low" with ignition on and on "high" when tripped. In this case it would be your "turn on" temp with the adj. thermostat. I have a Taurus "dual speed" fan and that is why I chose it. For stop and go traffic "dual speed" is the shizit because it is constantly "on" at varying speeds depending on radiator temp. Let me know if this helps.

:rock:
YOU DON"T WANT IT CONSTANTLY ON! That's what the thermostat switch is for... You will end up burning out the fan prematurly leaving it on all the time...It should only come on when A: The thermostat reaches a pre-determined tempreture.... or B: Turns on when the AC switch is hit...

In answer to his question about the diode, that just prevents back flow of power to the AC unit so that when the fan kicks on it doesn't turn on the AC unit.. He can omit the ac unit wiring and just go with the thermostat switch...
 

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Insane Network Engineer
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5,969 Posts
Follow the instructions on s-seriesforum.com in the how to section.... Even dual speed fans don't run all the time, they are kicked on and off by the temp sensor..Just adjust the thermostat switch to come on at a temp and when it goes below that temp it will shut off...
 
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