Stubob2517

Hi guys, I picked up a used bench style forge this weekend and I grabbed a Champion No. 50 blower at the same time. The fan seems to spin freely, but there are 5 wires coming out of the back of the mother housing. One is obviously the plug wire, two come out of the housing and are re-attached to side posts, and two go no where. Does anyone know where they should go, or where I can get a wiring diagram? I have looked everywhere I can think of without success. Thanks. Stu