Step1: Disconnect main electrical power supply to avoid electric shock or injury.
Step2: Remove existing lead wire from axial cooling fan terminals carefully.
Step3: Align plug-in lead wire with correct polarity/connector and mounting points.
Step4: Secure connections firmly, ensuring insulation is intact and no exposed wiring remains.
Step5: Restore power supply and test fan operation; stop immediately if overheating or sparking occurs.
Step6: Ensure all tools are removed before restoring full operation.