Oh, btw, if this car is new to you, keep an eye on things. The PO may have unplugged it because it's failing in the worst way imaginable--which is that it keeps running when the car is off and either drains your battery or starts a fire--seriously.
Keep an eye on its operation. Read up on it. The switch it's plugged into is the temp sensor on the lower radiator hose...which triggers when it should come on. It should come on briefly when you turn on the AC...but it should turn off eventually even after a long drive. If it doesn't, you probably need a new fan. Easy to replace if you have a manual--easy with an auto if you have the two tools you need and know how.
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