thanks Mxfrank. My 3 terminals are actually 2 separate sensors. one with 2 poles, and the other is a single. i shorted the sensor with 2 poles and nothing. then, shorted the harness (duh, it was early) and the fans fired right up. thanks for your help.

Maybe this should be a new topic, but do you know of a way to test the belt driven fan clutch? in comparison to my jeep cherokee, this one spins a lot more freely.