I have a YouTube channel - bobeaseshop - that shows how to install and how well it works. You have to use a relay and I would use a breaker type fuse. It's worth taking the time to get it right, and the fan will not only perform better, but also protect your Switch from high voltages. I'm using SparkFun bomber style switches and you can use a sensor if you want it to work, but I just love the switch.
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