The Club Car Carryall AC Motor Controller from Buggies Unlimited is the shot caller of your golf cart. A whole team also reports to that mastermind of a golf cart part, but this is the big dog. Every component that makes the golf cart go has a wire and a signal that runs to this unit. Most of them have a lot more than that. For example, the throttle sensor has several wires that communicate the pedal's position back to this unit. Without it, there would be no acceleration. What is the point of a caddie that's dead?The golf cart motor gets all of its power from the controller. Well, half of it, at least. You will have a constant signal and a variable one. The continual one is always present. However, the variable builds with the throttle. Without the controller, there would be no way for the cart to run. You cant even hotwire it like you can with the old Club Car DC units. The controller also acts as the converter to the proper type of voltage. Remember, batteries are DC. Those are not compatible. This unit makes it that they are. No bench testing without special equipment.The installation of this Club Car part is not a thing you need to worry about. However, you should not take this lightly either. This is a lot of voltage you are dealing with. If it reaches out and grabs you, it will not feel good. Have a buddy there to help and you tissues for your tears on the off chance it does happen.Call Buggies Unlimited for all your golf cart needs. If you need a Club Car Carryall AC motor controller, great. As a matter of fact, we would be happy to help get you set up. However, do not hesitate to call us on the minor stuff as well.