Turbo City Elec. Fan Switch

Has anyone used the low temp fan switch set up from turbo city? I am curious to see if it was worth the 50 bucks or not. I am also curious to see if anyone has done a write up on hard-wireing a fan switch. I can follow directions OK, but my electrical knowledge is limited at best. Thanks for any info.

I have one in my 88xj with their lower temp thermostat,and it is almost too efficient. I connect the sensor only in the summer and when hard off roading. You may have to get a different thermostat housing so you can attach the sensor.