I'm working on a Crown WP2035, and i am getting the -Pedal Wire KO- fault on the controller. i have swapped the head on the handle with a head from another working lift and I still have the fault. I have also replaced the wire harness from the controller to the head, and still have the fault. I have tested all voltages at my "B" connector at the controller, all are good, except i am not getting my.5v at B2. I have tried everything and i am at a loss.