What are the specs for this Wiring Harness?

The correct replacement for Goodman model APH1543M41BA — 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 APH1543M41BA — 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 APH1543M41BA — B1378700

Name: OEM Goodman 16-Pin Wiring Harness for APH1543M41BA — B1378700
Brand: Goodman
SKU: GOODMAN-15641
Price: 24.95 USD
Availability: InStock

SKU: GOODMAN-15641 Brand: Goodman

$24.95 $32.95

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Genuine Goodman B1378700 16-Pin Wiring Harness

The Goodman B1378700 is a factory OEM 16-pin wiring harness that connects the control board to the major electrical components in APH1543M41BA series heat pumps. Over time, harness connectors can corrode, melt at a pin, or crack from heat and vibration, causing intermittent faults and no-heat/no-cool conditions. This genuine harness restores clean, factory-spec connections with the correct pin count, gauge, and connector keying.

Specifications

OEM Part Number: B1378700
Part Type: Main Control Wiring Harness
Connector: 16-pin keyed plug
Fits Model: APH1543M41BA Heat Pump
Fit: Direct OEM replacement — plug-and-play

OEM vs. Generic

Genuine Goodman harnesses use the exact connector body and pin arrangement, so they seat fully and lock without back-probing or splicing. Generic or hand-built harnesses risk mis-pinned connections that can damage the control board. For anything carrying control and line voltage, OEM is the safe path.

Installation Difficulty

Easy to Moderate. Largely plug-and-play — unplug the old harness, route the new one along the same path, and click each connector into place. Photograph connections before removal and disconnect power first. About 20–30 minutes.

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...

$24.95

Frequently Asked Questions

Does this Wiring Harness fit my Goodman APH1543M41BA — B1378700?

Yes. This is the factory-specified OEM wiring harness for the Goodman APH1543M41BA — 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 APH1543M41BA — 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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