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The Goodman B1378701 5-Pin Wiring Harness is the genuine OEM connector harness used in the Goodman/Amana AEPF42601BA air handler to carry power and signal between the control board and a sub-assembly such as the blower or low-voltage circuit. If you have intermittent operation, discolored pins, or a brittle connector, this factory replacement restores a clean, secure connection.
This genuine OEM Goodman harness matches the factory pin-out and connector keying exactly, so it seats in one orientation and can't be mis-plugged. Universal harnesses often require crimping and can introduce resistance at the joints. OEM is the safe, code-correct choice.
Easy (2/5). A simple unplug-and-replace job — no tools beyond a screwdriver to free any retainer clips. Kill power at the breaker, swap the keyed plugs, and verify a firm click. Typically under 20 minutes.