not sure where this goes but here it is: ok i got a power supply and speed controller from a proform 525x crosswalk advanced and i want to use it for a go kart. oh yea i also got a motor from it. i dont have a potentiometer. i would like to know how to hook one up to it and if i would need the ac to dc power supply to make it all work. if i dont how i can hook the batteries up to the speed controller.