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Goodman

OEM Goodman 16-Pin Wiring Harness for APH1536M41AB Heat Pump — B1378700

SKU: GOODMAN-15574 Brand: Goodman
$18.95 $24.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The Goodman B1378700 16-Pin Wiring Harness is a genuine OEM control harness assembly for the Amana/Goodman APH1536M41AB package heat pump. This plug-in harness carries low-voltage control and sensor signals between the unit's control board, defrost board, and field connections through a keyed 16-position connector. Replacing a chafed, melted, or corroded harness restores reliable communication and eliminates intermittent faults caused by broken conductors or backed-out terminals.

  • Type: 16-pin low-voltage control wiring harness
  • Connector: Keyed 16-position plug (factory pinout)
  • Conductors: Color-coded, pre-terminated leads
  • Application: Control/defrost board interconnect and sensor circuit
  • Fits: APH1536M41AB package heat pump control system

OEM vs. Generic: The OEM B1378700 comes pre-terminated with the correct pin assignments, wire gauge, and connector keying, so it plugs straight in with no rewiring. Building a harness from generic wire risks mis-pinned circuits that can damage the control board or trigger false lockouts.

Installation difficulty: Moderate (3/5). Disconnect power, photograph the routing, unplug the 16-pin connector at each end, release any retaining clips, and route the new harness along the original path. Straightforward for a technician; care is needed to seat both connectors fully and keep leads clear of the fan and hot surfaces.

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

Frequently Asked Questions

Does this Wiring Harness fit my Goodman APH1536M41AB Heat Pump — B1378700?
Yes. This is the factory-specified OEM wiring harness for the Goodman APH1536M41AB 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 APH1536M41AB 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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Mike Rivera
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