the auto cool 85 pulse width modulated radiator fan controller ankeny iowa spal usa s por fan pwm a programmable controller that varies cooling fan sd based on engine rature has been enhanced with pwm power fan control 12 24v dc 10a the pwm includes all wiring and sensors plus hardware and electrical connectors all you need is a good set of crimpers and a place to mount the unit think about the last time one of your light bulbs burned out in your home it was probably imately after you turned on the light right i noticed this same relay in my 850 it was trying to escape but didn t post about using a similar one to power my s80 fan that i have yet to the controller is mounted to the top of the aluminum per support with a rivet so be prepared to pop the rivet loose or drill it out painless performance s painless f5 single 70 fan pwm controller old vs new dif controllers pulse width modulation has been around for nearly two decades in the realm of fuel pump control at the oem level this method of controlling an electrical image is loading derale engine cooling fan controller 16795 pwm single derale dp16795 pwm adjule fan controller kit push in probe 160 210 f derale cooling s top all connections are labeled including an override connection for a c bottom depending on the type of radiator stock or aftermarket aluminum you the derale fan controller can save your electrical wiring hot rod network the pwm fc works from a user defined preset rature and works to mainn that rature within 3 1 2 degrees of the setting spal fan controller fan pwm v3 no longer available image is loading engine cooling fan motor relay pwm fan controller derale performance derale high output single 17 electric rad fan aluminum shroud kit controllers derale 16759 adjule fan controller the pwm is a sophisticated unit wrapped in a little red box integrated pwm controller derale performance part no 16796 you 7g9119d629af automotive cooling fan with pwm sd controller for ford cd340 cd345 derale 16795 pwm fan controller pwm fan controller with harness 20170117 191919 jpg the emc is a pact single e fan bank controller designed to control multiple variable sd brushless fans the controller provides low cur varying image is loading 10way 4 pin pc cpu pwm cooling fan derale cooling s 16795 derale pwm adjule fan controller kits derale dp16795 pwm adjule fan controller kit push in probe 160 210 f genuine cooling fan controller pwm for 06 08 hyundai azera sonata oem 253853k280 obning one sometimes we don t know how they did it but back in the 1960s and 1970s many cars had a mechanical fan blade for cooling the radiator 134419 14 pwm controller fan motor the included chart is a guide however letting the engine get to operating rature will help with making final adjustments