What are the specs for this Wiring Harness?

The correct replacement for Goodman model Heat Pump APH1642M41AB — B1378700 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 Heat Pump APH1642M41AB — B1378700.

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 16-Pin Wiring Harness for Heat Pump APH1642M41AB — B1378700

Name: OEM Goodman 16-Pin Wiring Harness for Heat Pump APH1642M41AB — B1378700
Brand: Goodman
SKU: GOODMAN-15881
Price: 34.95 USD
Availability: InStock

SKU: GOODMAN-15881 Brand: Goodman

$34.95 $45.95

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Goodman B1378700 16-Pin Wiring Harness

The Goodman B1378700 is a genuine OEM 16-pin wiring harness built for the APH1642M41AB heat pump and related Goodman/Amana packaged systems. This plug-in harness carries low-voltage control and sensor signals between the control board and the unit's components. When wiring becomes brittle, chafed, or a connector pin corrodes, you get intermittent faults, failed staging, or a no-heat/no-cool condition. A fresh OEM harness restores clean, reliable connections without splicing.

Specifications

OEM Part Number: B1378700
Connector: 16-pin keyed plug assembly
Component: Control / signal wiring harness
Equipment: Heat Pump (packaged)
Fits Model: APH1642M41AB
Brand: Goodman / Amana

OEM vs. Generic

The OEM B1378700 arrives pre-terminated with the correct pin-out, wire gauge, and keyed connector so it plugs directly into the factory board. Generic harnesses force manual crimping and re-pinning, inviting miswires and future failures. OEM is the safe, code-friendly repair.

Installation Difficulty

Moderate — Photograph and label connections, disconnect power, unplug the old harness, route and seat the new one. Roughly 30–45 minutes; a wiring diagram is recommended.

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 16-Pin Wiring Harnes...

$34.95

Frequently Asked Questions

Does this Wiring Harness fit my Goodman Heat Pump APH1642M41AB — B1378700?

Yes. This is the factory-specified OEM wiring harness for the Goodman Heat Pump APH1642M41AB — B1378700. 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 Heat Pump APH1642M41AB — B1378700?

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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