fan switch

So I was working on my bike and the frail copper tab on the side of my radiator which from my research looks to be a water sensor part #92066-1183 broke off, so now a cable from the wiring coming from the trunk of cables that the fan is with is not plugged into anything. I started my bike and...

My radiator fan is turning on and doesn't turn off, even though the temperature gauge is showing the temperature to be fine. A couple people posted it sounds like a faulty fan switch. New switches seem to be running about $70. I would like to test my switch somehow to see if it is indeed the...