Electric fan controller

http://www.summitracing.com/parts/hda-3654/overview/

I put this on a dual fan system. Outstanding function and easy to set your operating temp where you want.

Just be sure to hook it up correctly the first time or you may blow it up like I did. I wired one of the fans backwards (they are old and their wires are both black is my excuse).

I routed the bulb so it stuck forward thru the fin of the radiator near the top.