What are the specs for this Wiring Harness?

The correct replacement for Goodman model APH1636M41AA Heat Pump — 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 APH1636M41AA Heat Pump — 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 APH1636M41AA Heat Pump — B1378700

Name: OEM Goodman 16-Pin Wiring Harness for APH1636M41AA Heat Pump — B1378700
Brand: Goodman
SKU: GOODMAN-15845
Price: 18.95 USD
Availability: InStock

SKU: GOODMAN-15845 Brand: Goodman

$18.95 $24.95

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The Goodman B1378700 16-Pin Wiring Harness is a genuine OEM replacement connector loom engineered for the Goodman APH1636M41AA heat pump and closely related Goodman/Amana packaged units. This harness carries the low-voltage control and sensor signals between the unit control board and its connected components. Over time, wiring harnesses fail from vibration fatigue, rodent damage, corroded pins, or heat-related insulation breakdown — symptoms include intermittent operation, no-call faults, or a unit that won't respond to the thermostat.

Part Number: B1378700
Connector: 16-pin keyed plug
Fits Model: APH1636M41AA
Equipment Type: Heat Pump
Type: Low-voltage control harness
Compatibility: Goodman & Amana branded units using this connector

OEM vs. Generic

This is a true OEM Goodman harness with the correct pin-out, keying, and wire gauge. Generic aftermarket harnesses often use thinner conductors or mismatched connector keying that can lead to backed-out pins and recurring faults. For control wiring, we recommend OEM to guarantee a plug-and-play fit and reliable signal integrity.

Installation Difficulty

Moderate. No crimping or splicing required — the harness unplugs from the existing connectors. Always disconnect power at the breaker before servicing. Photograph the routing before removal and match connector orientation on reassembly. A qualified HVAC technician can complete this in 20–40 minutes.

All parts are backed by our fitment guarantee. Confirm your model number before ordering to ensure a correct match.

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...

$18.95

Frequently Asked Questions

Does this Wiring Harness fit my Goodman APH1636M41AA Heat Pump — B1378700?

Yes. This is the factory-specified OEM wiring harness for the Goodman APH1636M41AA Heat Pump — 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 APH1636M41AA Heat Pump — 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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