What are the specs for this Wiring Harness?

The correct replacement for Goodman model APH1642H41AA — B1378701 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Goodman equipment which lists the model number APH1642H41AA — B1378701.

What symptoms indicate I need a new wiring harness?

Common symptoms that indicate you need a new wiring harness include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this wiring harness compatible with Bryant or Payne systems too?

Many Goodman parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

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Goodman

OEM Goodman 5-Pin Wiring Harness for APH1642H41AA — B1378701

Name: OEM Goodman 5-Pin Wiring Harness for APH1642H41AA — B1378701
Brand: Goodman
SKU: GOODMAN-15857
Price: 11.95 USD
Availability: InStock

SKU: GOODMAN-15857 Brand: Goodman

$11.95 $15.95

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Goodman B1378701 5-Pin Wiring Harness

The B1378701 is a genuine Goodman/Amana OEM 5-pin wiring harness designed for the APH1642H41AA package heat pump. This secondary harness handles a dedicated 5-conductor circuit — typically a sensor, switch, or motor lead group — tying it cleanly into the unit's control system. Damaged insulation, a loose connector, or a burnt pin on this circuit can trigger nuisance faults and unreliable operation. Restoring it with the correct factory harness returns the connection to spec.

Specifications

Part number: B1378701
Connector: 5-pin OEM plug
Part type: Control / signal wiring harness assembly
Fits model: APH1642H41AA (Goodman package heat pump)
Brand: Goodman / Amana OEM

OEM vs. Generic

This harness uses the exact connector keying and wire gauge specified for the APH1642H41AA. Universal harnesses or splice repairs invite mis-pinning and intermittent contact. The OEM part plugs in with correct polarity and strain relief for a durable, code-correct connection.

Installation Difficulty

Moderate (2/5). Simpler than the 16-pin harness thanks to fewer conductors. Disconnect power, photograph and label the connection, unplug the old harness, and route the new one along the same path. Well within reach of an HVAC tech.

Always disconnect power before servicing. Confirm connector orientation against the original harness before final connection.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Goodman 5-Pin Wiring Harness...

$11.95

Frequently Asked Questions

Does this Wiring Harness fit my Goodman APH1642H41AA — B1378701?

Yes. This is the factory-specified OEM wiring harness for the Goodman APH1642H41AA — B1378701. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the wiring harness on my Goodman APH1642H41AA — B1378701?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new wiring harness?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this wiring harness compatible with Bryant or Payne too?

Many Goodman parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Goodman wiring harness?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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