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The Goodman B1378701 5-Pin Wiring Harness is a genuine OEM replacement connector assembly built for AEPF313716AA air handlers. This compact 5-pin harness links control or accessory circuits within the unit, delivering clean low-voltage signal connections between components. Damaged, brittle, or corroded harness plugs are a common cause of intermittent blower or control faults, and a fresh OEM harness restores dependable operation.
The OEM B1378701 plug matches the original board socket exactly, with keyed orientation that prevents reversed connections. Generic harnesses rely on field crimping and manual pin matching, raising the risk of high-resistance joints and nuisance faults. OEM is the safer choice for control wiring.
Easy (1/5). Disconnect power, unplug the old 5-pin connector, and click the replacement into place. No tools needed. Verify the breaker is off before opening the cabinet.