It the way you wire it up ie if u wire the live and earth up one way it will spin anti clockwise If you wire it up the other way it will spin clockwise One will suck and the other way will blow
Give me a few days I have a spare engine loom laying about for when I redo my one on my car if I have a spare indicator plug I will cut and send it to u with wire etc or if not go to a auto electrocution and buy new terminals