What are the specs for this Wiring Harness?

The correct replacement for Goodman model WAHMS3743P4ACA — 0259A00002P 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 WAHMS3743P4ACA — 0259A00002P.

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 9-Pin Male Wiring Harness for WAHMS3743P4ACA — 0259A00002P

Name: OEM Goodman 9-Pin Male Wiring Harness for WAHMS3743P4ACA — 0259A00002P
Brand: Goodman
SKU: GOODMAN-2100
Price: 7.95 USD
Availability: InStock

SKU: GOODMAN-2100 Brand: Goodman

$7.95 $10.73

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Texas CMBL #19328542014

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The Goodman 0259A00002P is a genuine OEM 9-pin male wiring harness designed for the WAHMS3743P4ACA wall-mount air handler. This factory connector carries the low-voltage and control signals between the air handler's control board and its blower and accessory circuits. Using the correct OEM harness ensures the pin-out, gauge, and connector keying match your unit exactly — preventing miswiring, intermittent faults, and nuisance lockouts.

Specifications

Part Number: 0259A00002P
Type: 9-pin male wiring harness / connector
Application: Goodman / Amana air handlers, model WAHMS3743P4ACA
Function: Control & low-voltage signal routing
Build: OEM-spec wire gauge and keyed terminal block

OEM vs. Generic

Generic harnesses often use incorrect pin spacing or thinner conductors that can melt under load or back out of the connector over time. This OEM 0259A00002P delivers a guaranteed pin-for-pin match, factory-rated insulation, and a secure latching fit — so your repair lasts and your warranty stays intact.

Installation

Difficulty: Easy. A plug-and-play swap for most technicians and confident DIYers — disconnect power, unclip the old harness, route and seat the new connector until it latches. Typical install time is under 15 minutes. Always shut off power at the disconnect before servicing.

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 9-Pin Male Wiring Ha...

$7.95

Frequently Asked Questions

Does this Wiring Harness fit my Goodman WAHMS3743P4ACA — 0259A00002P?

Yes. This is the factory-specified OEM wiring harness for the Goodman WAHMS3743P4ACA — 0259A00002P. 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 WAHMS3743P4ACA — 0259A00002P?

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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