fan thermastat probe location

[JDMClifford]

so i finaly installed electric fans because i messed my car up twice this week because of my clutch fan, once because of age, then broke my water pump because of a crappy one i put on my car. so i put the probe in the fins of my radiator right below the return hose. i have a s13 redtop with koyo rad. the fans only come on after my tubo timer goes off and the car has ben sitting, anywhere else i can put the probe that will make the fans turn on earlyer? i know i can whire it on a switch but i dont what the hastle of having to wait till my turbo timer turns off to get out of the car.