Please let us know how it goes and we will take it from there.
If the throttle and motor both pass their tests then that points towards the controller being faulty.
Please let us know how it goes.
ID Tag Locator
If the scooter does not have an ID tag then we can determine what controller it needs by the number of wires and wire colors that the throttle has.
I have replaced the batteries, controller and the throttle assembly. I am getting power to the throttle and the power switch but when I twist the throttle id does nothing. I have tested the motor and it works. Quick question, When I bought the batteries, the company I bought them from wired them backwards. Could that damage the controller?
If the batteries were wired backward and the power switch was on or was turned on, that will damage the controller. Controllers are extremely sensitive to wiring mistakes like that and will burn out of wired backward (in reverse polarity) to the battery pack.