What are the specs for this Wiring Harness?

The correct replacement for Goodman model APH1642H41AB — 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 APH1642H41AB — 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 APH1642H41AB — B1378701

Name: OEM Goodman 5-Pin Wiring Harness for APH1642H41AB — B1378701
Brand: Goodman
SKU: GOODMAN-15864
Price: 11.95 USD
Availability: InStock

SKU: GOODMAN-15864 Brand: Goodman

$11.95 $14.95

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Goodman B1378701 5-Pin Wiring Harness

The B1378701 is a genuine Goodman OEM 5-pin wiring harness designed for the APH1642H41AB packaged heat pump. This pre-terminated harness connects a specific low-voltage subsystem — such as a sensor, valve, or auxiliary component — to the unit's control circuit through a keyed 5-position connector. Swapping out a burnt, brittle, or damaged harness restores solid connections and clears intermittent, hard-to-diagnose faults.

Specifications

Type: Multi-conductor low-voltage control harness
Connector: Keyed 5-pin plug
Function: Component-to-control-circuit wiring link
Fitment: Goodman/Amana heat pump, model APH1642H41AB
OEM Part Number: B1378701

OEM vs. Generic

Matched to the factory pin-out, wire gauge, and connector keying, the OEM harness plugs straight in with no splicing. Generic substitutes can introduce voltage drop or mis-pinned terminals that trigger faults. This genuine part guarantees a correct, reliable fit.

Install Difficulty

Easy. No refrigerant work required — cut power, unplug the old harness, and connect the new keyed plug. Suitable for a careful DIYer or any HVAC tech.

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 APH1642H41AB — B1378701?

Yes. This is the factory-specified OEM wiring harness for the Goodman APH1642H41AB — 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 APH1642H41AB — 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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