Cooling Fan Switch location?

[shaner]

Hi everyone.
I have a 90 GP SE, 3.1. My cooling fans will not kick on. I checked at the relay(s) location and they will come on with a jumper, but they will not come on otherwise.
There is supposed to be a Cooling Fan Switch located on the radiator(according to my info) and i cant find it. There is one located in the thermostat housing, but i believe that one is the Coolant temperature sensor for the gauge on the cluster.
Am I wrong, is there no Cooling Fan Switch on this car? What makes the fans kick on?
Any help would be great! Thanks Guys.

[TIMS TURBO]

hi i have a 90 LE but my passenger fan STAYS on,even with car off and cold!I've been trying to figure this out too.I found one post on here that said there is a fan switch on the back driverside corner of the head that controlles the fan,with one green wire comming from it.But i'm still trying to confirm this!The back head on driverside.