u/K9CHALKX

i have the standard crazy cart, and i want to upgrade it to a 48v battery. I have the motor and controller for a 48v battery and the battery installed, but when i use the throttle it doesnt want to move anywhere.
I have tried switching wires and even moving the steering wheel around and nothing.
When i plug the battery in, it makes a little spark but i dont think thats the issue, the light to the on/off switch still works and i dont know why my throttle isnt.
If anyone can help that would be much appretiated