Old models it is in the junction box. Others it is in the auger motor wiring harness. If it is the capacitor, they don't make them any more, and you have to buy a new motor to get one, but some places may still have the capacitor jumper # 230-2150. I have some if you can't find one. If your control box tests out ok, I can send you one to try and see if that is the issue. kap