i have installed a mishimoto radiator with only one problem. there is some sort of electric switch box that is a rectangle shape that plugs directly into the radiator fan and a wiring harness plugs into the other end. but with the mishimoto the switch wont fit because it hits my water pump pulley. i can plug the wiring harness directly into the fan without the switch and the fan still kicks on. i just wanted to know if anyone knows what the swtich does and if its necessary...im assuming its there for a reason.