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The Goodman B1378700 16-Pin Wiring Harness is a genuine OEM control harness built for APC1560H41BA air conditioning systems. This pre-terminated assembly carries low-voltage control and sensor signals between the control board and the unit's components through a keyed 16-position connector. Cracked insulation, corroded pins, melted terminals, or rodent damage can cause intermittent faults, error codes, or a no-start condition — a fresh OEM harness restores clean, reliable connections.
This OEM Goodman harness uses the correct pin count, keying, wire gauge, and lead lengths for a true plug-and-play swap. Generic harnesses or loose terminals force manual pinning and splicing, which invites miswiring and connection failures. For control circuits, the factory harness is the safe choice.
Easy — disconnect power, unplug the old harness at each keyed connector, photograph the routing, and seat the new harness until it clicks. No splicing required on a direct OEM replacement.