I just purchased a Ford Think ! I installed new batteries the cluster lit up it shows the mileage battery levels , everything . The wipers work , the lights work but when I press the accelerator the vehicle doesn’t move , Any advice r tips would help . thanks

Do you hear the contactor click? If not this may be your problem. Contactor could be bad itself. Also contactor gets its power for the cluster and its ground from the controller.

Are there any error codes or blinking lights? Is the battery voltage near the correct value?