Located at right rear of tub is the out of balance lever hanging down behind the bowl. Switch is inside panel above the lever. You will need to remove the control module to get at it. Turn power off at wall & unplug lead. Disconnect all wiring harness plugs. Each one is different shape & will only go back in one place. The earlier modules were water cooled so if it is one of those, you will get some water spill into the console area when you remove the module. Be ready with a sponge to soak it up.
Lincoln Appliance NZ, March 2009