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The Goodman B1378701 5-Pin Wiring Harness is a genuine OEM harness for the APH1524M41CA heat pump and related Goodman/Amana package units. Its keyed 5-position connector links a specific component circuit — such as a motor, sensor, or valve — to the control board with the correct pin-out and wire gauge for reliable operation.
The OEM 5-pin harness is pre-terminated and keyed so it can only seat one way, preventing reversed connections. Generic substitutes require hand-crimping pins in the correct order — an easy place to introduce a wiring fault. For a dependable, no-guesswork repair, the factory harness is the right part.
Easy to Moderate. With power off, unplug the old connector, route the new harness along the same path, and click the keyed plug into place. No tools or splicing required for a straight swap. Verify the mating header pins are clean before connecting.