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Old 12-01-2019, 04:13 PM   #11 (permalink)
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Higher resistance (low fans speed) does consume a higher percentage of the total power, but it also reduces the total power. For example, on high fan speed, the most power is consumed, but 0% of it is wasted by resistors.

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Old 12-03-2019, 08:44 AM   #12 (permalink)
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I replaced a three resistor four fan speed controller with a PWM controller in my 1994 Suburban. I now have a dial, and can dial the speed to any speed I want, which is a nice feature.
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Old 12-03-2019, 10:06 AM   #13 (permalink)
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Quote:
Originally Posted by aardvarcus View Post
I replaced a three resistor four fan speed controller with a PWM controller in my 1994 Suburban. I now have a dial, and can dial the speed to any speed I want, which is a nice feature.
Have a writeup?
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Old 12-03-2019, 05:11 PM   #14 (permalink)
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Ecky,

I never did a specific writeup for it, it was in the middle of my "rewire the vehicle from scratch" bout of insanity. Not that hard to do though, 12v Fan Power in, 3 wire potentiometer, output to the fan motor.

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