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The Goodman B1378701 5-Pin Wiring Harness is a genuine OEM connector assembly for the APH1560M41AD packaged heat pump. This shorter 5-position harness links a specific subassembly — such as a motor, sensor, or relay circuit — to the main control board with a keyed, locking plug. Pre-terminated at the factory, it installs without cutting or crimping and restores a clean, reliable connection where the original harness has become brittle, burnt, or corroded.
The OEM 5-pin harness matches the factory keying and pin-out exactly, so it can only seat one correct way. Generic replacements often need hand re-pinning, raising the odds of a reversed or intermittent connection. For a plug-and-play repair, OEM is the safe, fast option.
Easy. Disconnect power, unplug the old harness at both ends, route the replacement along the same path, and click the keyed connectors home. No tools or splicing needed — verify each plug locks fully before restoring power.