Fishmech.Thank you for the advice. Battery voltage was good. This is a power stacker so it does not have an estop or a line contactor. I also tested the tiller handle switch. It is magnetic but the built in led indicated it is functioning. No codes show up on the BDI but lift/lower and travel functions do not work. The horn does not even work. I am thinking controller but without a wiring diagram it's hard to test it.