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The genuine OEM Goodman B1378701 is a 5-pin wiring harness for the AEPF303616CA air handler. This shorter loom connects a specific subsystem — commonly blower motor or accessory wiring — to the control circuit. Damaged or burnt pins on this connector cause dropouts and fault codes; the OEM harness restores a solid factory connection.
The OEM B1378701 carries the exact pin layout and wire gauge for the AEPF303616CA, so it seats directly with no rewiring. Generic or spliced connectors invite mismatched pin-outs and loose terminals. Choose the genuine OEM harness for a clean, reliable repair.
Easy (2/5) — unplug the failed harness and connect the replacement along the same route. Disconnect power before servicing. No splicing required.