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The genuine OEM Lennox 98M72 wire harness delivers pre-terminated, factory-spec wiring between the control board and the components it powers in your Lennox equipment. Each conductor is cut to the correct length and fitted with the exact connectors and terminals your unit requires, ensuring clean, reliable electrical connections without splicing or guesswork.
Common failure symptoms: A damaged or degraded harness can cause intermittent operation, components that fail to energize, error codes on the control board, or complete no-heat/no-cool conditions. Look for melted or discolored insulation, brittle wires, corroded pins, or loose connectors — these are common after years of heat cycling and vibration, and can produce frustrating faults that come and go.
Why OEM matters: The Lennox 98M72 uses the correct wire gauge, insulation rating, and keyed connector housings so every plug seats exactly where it belongs. Aftermarket or hand-built harnesses risk mismatched connectors, wrong pinouts, and undersized wire that can overheat. Installing the OEM harness guarantees a plug-and-play fit and restores your Lennox system's wiring to factory condition.