This is a brand new Hillbilly Potentiometer (switch), which is easily fitted in a few minutes.
Simply unscrew all the screws in the handle, then disconnect the current potentiometer from the trolley wiring, then connect the new potentiometer, fit it into place in the handle and replace the handle and handle screws.
N.B. Always ensure that the wiring is not obstructing the handle screws.
Available with wires or with connector board attched to the potentiometer, please choose from the drop down box.