fan install

[st1]

So I went to the junkyard and got a radiator fan off a 93 lincoln contiential. It has 3 wires (black, brown with a yellow stripe, and brown with a orange stripe), I am wondering which wire goes to what? I am assuming the black wire should be connected to a ground. I think the other 2 wires are for low speed operation and high speed operation but I am not sure how or what to hook them up to. I have already installed a serpentine belt system off a 92 silverado on the truck now I want to get rid of the water pump fan and go with an electric one. your assitance is requested. Thanks.