Step1: Turn off power and unplug oven to ensure electrical safety before starting.
Step2: Remove control panel cover using proper tools and note wiring layout carefully for reference.
Step3: Disconnect old selector switch wires carefully, noting terminal positions to avoid miswiring later.
Step4: Install new switch into mounting bracket securely, ensuring it aligns with control panel opening.
Step5: Reconnect wires matching original configuration exactly according to labeled terminals and diagram.
Step6: Reassemble panel and restore power carefully, then test all oven modes for proper operation.