cheapest thermostat for electric fans?

[knightowl73]

looking for a cheap way to add electric fans. i have a nice size fan and shroud from a 03 lincoln towncar thats almost a perfect fit that i want to use. is there a cheap thermostt that i can buy to control it that is dependable? and how easy is it to hook up? i mean where does the temp sensor actually go? do i have to tee it off the block some way with my original one? cus that would look pretty tacky hangin from the side of the block