Off-Road Forums & Discussion Groups - View Single Post - Wiring electric fan for thermostat and dash toggle???
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post #41 of (permalink) Old 04-29-2009, 08:23 PM
Way Outta Control
Join Date: Sep 1999
Location: usa
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If they do the job, magnets or not, why worry about it?

Interesting note - I put one on a Jeepster I had (a Hayden?) - in front of the radiator. I used a simple on-off switch. I also had a green light by the switch to remind me it was on that illuminated with the fan. Nothing complicated - KISS.

When driving down the highway I noticed the light came on - with the fan switch off! Thought something was awry at first.

The fan was turning from the air blowing through it, and the fan motor was acting like a generator, powering the light.
So the fan motor must have had permanent magnets.

It even did it when not driving, just facing into a breeze. I had fun with it, I told a friend that's how I kept the battery charged - he believed it!
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