What are the specs for this Wiring Harness?

The correct replacement for Goodman model GMT140-5A — 0259F00008P 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 GMT140-5A — 0259F00008P.

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 15-Pin Male Wiring Harness for GMT140-5A — 0259F00008P

Name: OEM Goodman 15-Pin Male Wiring Harness for GMT140-5A — 0259F00008P
Brand: Goodman
SKU: GOODMAN-12478
Price: 17.95 USD
Availability: InStock

SKU: GOODMAN-12478 Brand: Goodman

$17.95 $22.95

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The Goodman 0259F00008P Wiring Harness is a genuine OEM 15-pin male connector assembly for the Goodman GMT140-5A gas furnace and compatible Goodman/Amana models. It mates with the corresponding female harness to carry control and power signals between the furnace control board and key components. Damaged, discolored, or loose pins lead to erratic operation, nuisance lockouts, and no-heat conditions — this factory-spec harness restores a secure, correctly keyed connection.

Specifications

Connector: 15-pin, male
OEM Part Number: 0259F00008P
Type: Pre-terminated wiring harness assembly
Compatible Model: Goodman GMT140-5A furnace
Mates with: 15-pin female harness (0259F00009P)
Brand: Goodman (Amana compatible)

OEM vs. Generic

The OEM 0259F00008P guarantees the exact pin-out and keying required to mate safely with the female side. Generic harnesses are not recommended for keyed 15-pin furnace connectors — incorrect pinning risks shorts and control-board damage. Choose genuine OEM for a guaranteed fit.

Installation Difficulty

Moderate (3 of 5). Connector-based swap, but demands careful matching to the mating female harness and correct routing. Label and photograph before disconnecting. Cut power to the furnace before servicing; consult an HVAC pro if unsure.

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 15-Pin Male Wiring H...

$17.95

Frequently Asked Questions

Does this Wiring Harness fit my Goodman GMT140-5A — 0259F00008P?

Yes. This is the factory-specified OEM wiring harness for the Goodman GMT140-5A — 0259F00008P. 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 GMT140-5A — 0259F00008P?

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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